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Best Waterproof Fitness Trackers Reviewed & Rated for Quality

last updated Feb 27, 2019

Many people who use fitness trackers wear them all the time. This is the best way to get the maximum amount of reward out of your fitness tracker. The more data it gets about your living habits, the better a job it can do making sure you are on the right track to staying healthy. Because of this, it could be important to get a fitness tracker that can follow you everywhere. Waterproof fitness trackers do all of the things that other fitness trackers do, but now you can truly take them everywhere. These are great for swimming, running in the rain, and everywhere else as well.

Here you'll find a list of the best options on the market. They differ in price, accuracy, and many other categories. Have a look around and find the option that will best fit your lifestyle.

In a Hurry? The test winner after 11 hrs of research

icon
Fitbit Flex 2
99/100 our score
Accuracy
99
Water Resistance
99
Battery Life
99
Apps
99
Comfort
99
Fitbit Flex 2
Why is it better?

Can be taken anywhere

Great price

Connects to smartphone

Removable tracker

In a Hurry? Editors choice:
Fitbit Flex 2
Test Winner: Fitbit Flex 2
Interviewed Experts
6
Interviewed Experts
Researched Sources
15
Researched Sources
Total Readers
3301
Total Readers
Reviews Considered
2185
Reviews Considered
Hours Researching
11
Hours Researching
Products Evaluated
13
Products Evaluated
Sorting Options
Accuracy Water Resistance Battery Life Apps Comfort By Default
Rank
PictureProduct
Name
Rating
Shops
#1
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
99
Accuracy
99%
Water Resistance
99%
Battery Life
99%
Apps
99%
Comfort
99%
Price Comparison Last Updated (20.03.19)
$58.95
$99.99
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#2
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
97.6
Accuracy
98%
Water Resistance
97%
Battery Life
97%
Apps
98%
Comfort
98%
Price Comparison Last Updated (20.03.19)
$229.99
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$247.97
$299.99
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#3
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
96.4
Accuracy
97%
Water Resistance
96%
Battery Life
97%
Apps
96%
Comfort
96%
Price Comparison Last Updated (20.03.19)
$289.43
$359.00
See Deal
#4
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
95.2
Accuracy
95%
Water Resistance
96%
Battery Life
95%
Apps
95%
Comfort
95%
Price Comparison Last Updated (20.03.19)
$46.95
#5
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
94.2
Accuracy
94%
Water Resistance
94%
Battery Life
94%
Apps
94%
Comfort
95%
Price Comparison Last Updated (20.03.19)
$199.35
#6
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
92.4
Accuracy
93%
Water Resistance
93%
Battery Life
92%
Apps
92%
Comfort
92%
Price Comparison Last Updated (20.03.19)
$57.22
#7
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
91.2
Accuracy
91%
Water Resistance
91%
Battery Life
91%
Apps
92%
Comfort
91%
Price Comparison Last Updated (20.03.19)
$66.99
#8
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
89.4
Accuracy
89%
Water Resistance
90%
Battery Life
90%
Apps
89%
Comfort
89%
Price Comparison Last Updated (20.03.19)
$249.99
#9
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
88.2
Accuracy
88%
Water Resistance
88%
Battery Life
87%
Apps
89%
Comfort
89%
Price Comparison Last Updated (20.03.19)
$164.86
$199.95
See Deal
$199.95
See Deal
#10
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
86
Accuracy
86%
Water Resistance
86%
Battery Life
86%
Apps
86%
Comfort
86%
Price Comparison Last Updated (20.03.19)
$199.99
In Depth Review Top 10
  • Fitbit Flex 2
  • Garmin Vivoactive 3
  • Apple Watch Series 3
  • Misfit Ray
  • Samsung Gear Fit2 Pro
  • Moov Now
  • Huawei Band 2 Pro
  • TomTom Spark 3
  • Polar M430
  • Motiv Ring
Table of contents
  • Criteria Used for Evaluation
  • Other Factors to Consider
  • Frequently Asked Questions
  • Sources

10 Best Waterproof Fitness Trackers

1. Fitbit Flex 2

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
99
Fitbit Flex 2
Accuracy
99
Water Resistance
99
Battery Life
99
Apps
99
Comfort
99
best offer for today
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$58.95
$99.99
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Pros:

Can be taken anywhere

Great price

Connects to smartphone

Removable tracker

Cons:

Band might not fit properly for some people

Fitbit has been the poster child for the quickly developing field of fitness trackers. Their Flex 2 reaffirms their status by being one of the best that you can get.

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Does Everything
The Fitbit Flex 2 has all of the features you might be looking for in a fitness tracker. It lets you set a daily goal and then show your progress on the way to get there. It counts the calories you have burned that day, the amount of sleep you get in a night, and the amount of activity you have gotten in a day. The Fitbit Flex 2 does a bit of everything.

Other Features
The Fitbit Flex 2 is great because it is useful in other ways as well. One interesting feature of the Fitbit Flex 2 is that you can remove the tracker from the band for if the band doesn't fit your current outfit or if you want to carry it around more discreetly. It also can connect to your smartphone so that you can receive alerts for texts and other notifications on your wrist if your phone is in your purse or unavailable at the time.

Cost and Value
The Fitbit Flex 2 is also available at a really great price. This product is at the top of the market for a reason. It has many convenient features, and can really be taken anywhere. This is a great choice for anybody who wants a better handle on their daily health.

2. Garmin Vivoactive 3

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
97.6
Garmin Vivoactive 3
Accuracy
98
Water Resistance
97
Battery Life
97
Apps
98
Comfort
98
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$247.97
$229.99
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$299.99
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Pros:

Variety of extra features

Long battery life

Strong construction

Fourteen days of activity logged

Cons:

Shorter battery life when in GPS mode

The Garmin is a smartwatch that has an expansive amount of features that you can customize to fit whatever day it is you are planning to have.

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Fitness Features
The Vivoactive 3 has many options for many different kinds of sports. It has its own app store that you can peruse and choose the right app for the right activity that you want. This means custom workouts. It also will track your activity for up to fourteen days so that you can have an idea of your workouts.

Other Features
The Vivoactive is great for all of the customization that you can achieve with it. It has many apps, and you can choose whatever widgets you want to be displayed on the front of it so that you can track any kind of information that you want. It also is compatible with your smartphone so that you can keep up on your notifications. It also has GPS so that you can keep track of where you are at any time.

Cost and Value
The Vivoactive is quite a bit more expensive than the Fitbit, but it is still a great choice if you want a fitness tracker. It's list of features is more expansive than the Fitbit and the level of customization means that you will always find a use for it. It is made of good materials and is quite stylish, so it is easy to take everywhere with you.

3. Apple Watch Series 3

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
96.4
Apple Watch Series 3
Accuracy
97
Water Resistance
96
Battery Life
97
Apps
96
Comfort
96
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$289.43
$359.00
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Pros:

Stylish

Good construction

Simple design

Connects to smartphone

Cons:

Only works with iPhone

The Apple Watch is a smartwatch from Apple that has a sleek stylish look, and many features that you can use to achieve your fitness goals.

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Fitness Features
The Apple Watch 3 comes with many features that make it a great choice as your fitness tracker. It uses an intuitive ring system that keeps track of your active, sitting, and sleeping hours, and will suggest better habits for all three. It lets you share this data with other people to help you stay motivated. It will also keep track of your calories burned so you can know if you are on the right track.

Other Features
The Apple Watch 3 is a great smart watch for all of its other features as well. It is totally waterproof so you can take it swimming with you at any time. It can also connect to your iPhone for all of the extra features that being connected to a smart phone can bring. You will also have access to many apps, including some for anxiety and other useful health-related things.

Cost and Value
The Apple Watch is a bit expensive, but you will get Apple's seal of quality. They always put out good products, and this watch is no exception. It comes with many features, is incredibly durable, and looks very stylish. You'll feel good taking this one around town.

4. Misfit Ray

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
95.2
Misfit Ray
Accuracy
95
Water Resistance
96
Battery Life
95
Apps
95
Comfort
95
best offer for today
$46.95
Pros:

Connects to smart home devices

Very waterproof

Tracks important data

Doesn't take up too much wrist space

Cons:

Inaccurate step tracker

The Misfit Ray is a fitness tracker that is exceptionally easy to use, and has all of the features that you would be looking for in a fitness tracker.

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Fitness Features
The Misfit Ray is a totally waterproof fitness tracker that has its tracker protected in a metal sheath. It tracks all of the important pieces of health related information such as how many steps you have taken in a day, how many calories you have burned, and also how good your sleep was the night before.

Other Features
This fitness tracker is different than the other ones on this list because it is not rechargeable. This is a good thing, because it means that it will last much longer than the other ones on this list. The Misfit Ray will last for up to six months without needing a charge. Another interesting feature is that it is able to be connected to your smart home devices so you can control your lights, alarms, and thermostat from your wrist.

Cost and Value
This one is more in line with the Fitbit in terms of price. The Misfit Ray is a fitness tracker first, but it has many of the features you might want in a smartwatch. This makes it useful for many things, beyond your health. As a fitness tracker, it can come with you anywhere, and will make sure that you stay on track.

5. Samsung Gear Fit2 Pro

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
94.2
Samsung Gear Fit2 Pro
Accuracy
94
Water Resistance
94
Battery Life
94
Apps
94
Comfort
95
best offer for today
$199.35
Pros:

Can play music for you

Apps for fitness and meal planning

Waterproof up to fifty metres

Compatible with all devices

Cons:

Lower battery life

The Fit2 Pro is a fitness tracker from Samsung that has all of your fitness data in one place. This is a feature-packed fitness tracker that will keep you on top of your health.

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Fitness Features
The Fit2 Pro has many features that make it very useful for any of your physical activity. It has a heart rate monitor, counts your steps, counts your calories, and can even track your interval training. this fitness tracker is also great because it has proprietary apps that will help you create a healthy diet plan, as well as a fitness plan.

Other Features
The Fit2 Pro is a fitness tracker with many other useful features. It is waterproof for up to 50 metres. It is also unique because it can store music for you so you don't have to bring a cellphone with you if you want to listen to music while you run. Another great thing is that it is compatible with all kinds of smart devices so you don't have to worry if you buy a new smartphone, it will still connect to the Fit2.

Cost and Value
This is another fitness tracker that is a bit more expensive. On the other hand, it is a really useful fitness tracker that is incredibly useful for keeping track. It is very accurate in its measurements and has all of the features you might need. This can do all of your fitness planning for you in one spot.

6. Moov Now

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
92.4
Moov Now
Accuracy
93
Water Resistance
93
Battery Life
92
Apps
92
Comfort
92
best offer for today
$57.22
Pros:

Designed specifically for swimming

Encourages you way to goals

Can be connected to Moov app

Cheaper than other smartwatches

Cons:

Simple, no heartrate monitor

The Moov fitness tracker is a lightweight fitness tracker that also works as an audio coach for some extra motivation that doesn't leave you staring at your wrist.

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Designed for Swimming
Besides all of the great features that the Moov has in keeping track of specific workouts like running, and body weight exercise, the Moov is also specifically designed for swimming. It can be taken into the water without any problems. It also has programs designed into the tracker that will keep track of your stroke type, and the amount of lengths that you have done in the pool.

Other Features
The Moov also has an audio coach that will tell you how you are doing during your workouts. Set your goals, and the audio coach will inspire you on the way to reach those goals. It will also track your minutes of physical activity, and the hours of healthy sleep you get. It can also be connected to the Moov app so you can track your progress over a longer window of time, and see all of your positive results.

Cost and Value
The Moov fitness tracker is closer to the Fitbit in price, and gives you the same amount of features as it. This is a great watch for its focus on exercise. It counts your sleep, but it is more focused on giving you great workout routines and making sure you know the results you have achieved while working out.

7. Huawei Band 2 Pro

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
91.2
Huawei Band 2 Pro
Accuracy
91
Water Resistance
91
Battery Life
91
Apps
92
Comfort
91
best offer for today
$66.99
Pros:

Heart rate monitor

Active coaching

Long lasting battery

Clear and simple design

Cons:

Weak closure on strap

The Huawei is another great choice if you want to buy yourself a fitness tracker. It has been designed with all of the useful features you see in the other items on this list.

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Fitness Features
The Huawei Band 2 Pro has all of the fitness tracking features necessary to keep your healthy lifestyle going. It has an active heart rate monitor. It also has a calorie counter, and a sleep monitor. The sleep monitor is very detailed, and will keep track of your REM sleep and light sleep so you know the type of rest that you had.

Other Features
The Band 2 Pro is well quipped in other ways too. This fitness tracker is totally waterproof and promotes you going for a swim with it on. The displays on it are very clear and concise so you can always read all of the information that you might need. This fitness tracker also has a very long lasting battery that can last for up to three weeks at a time.

Cost and Value
This fitness tracker is a good purchase for anyone looking for a fitness tracker. It has all of the features you might be looking for, and is well-designed so that it can be easily read and stay sturdy. The price is not so bad, but it is more expensive than the Fitbit.

8. TomTom Spark 3

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
89.4
TomTom Spark 3
Accuracy
89
Water Resistance
90
Battery Life
90
Apps
89
Comfort
89
best offer for today
$249.99
Pros:

Wireless headphones included

Bluetooth connectivity is very simple

Workouts on phone

Has a GPS

Cons:

No heart rate monitor

The TomTom is a fitness watch designed to let you keep track of all your physical activity and also give you access to your music so you can stay motivated.

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Fitness Features
This fitness tracker keeps track of more basic things, such as the distance that you have ran, and your location. It has a working GPS in it so you can track your routes and distance. It also has over fifty workouts loaded into it that you can choose from so you can be doing the optimal workout at any time with guided instructions.

Other Features
The TomTom Spark has some other useful features that can help you out on your run. It is waterproof for up to a forty foot depth. This makes it useful enough to be taken anywhere. It also comes with some Bluetooth headphones that can connect to the watch. This means you can listen to your music without any annoying plugs or smartphones getting in your way, and it is really easy to connect as well.

Cost and Value
This fitness tracker is a bit simpler than the others on this list. It doesn't actively track your heart rate or your sleeping cycle. It is a good deal and has everything you need to do your workout. It is nice to only have to pull out your fitness tracker and head phones and then away you go.

9. Polar M430

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
88.2
Polar M430
Accuracy
88
Water Resistance
88
Battery Life
87
Apps
89
Comfort
89
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$164.86
$199.95
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Pros:

App better helps you track your goals

Fitness tests

Heart rate monitor

Good fit

Cons:

Not great at syncing with program

The Polar is a watch that has been designed for people who are very committed to running. It has all of the features that you might want if you are an avid runner.

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Running Features
The Polar keeps a tight grip on your wrist as it tracks your heart rate and location. This watch makes it easy to see your route, and also the amount of energy you are putting into your run. It also has a good amount of workouts loaded into it so you can get some inspiration while you run. You can also keep track of your rest because it tracks the amount and quality of your sleep.

Other Features
The Polar is a great smart watch that has other features that are useful to you reaching your fitness goals. There is a Polar app that you can download for your phone or computer that will give you a more complete image of your fitness goals with activity logs. There is also a fitness test that can determine where you are at physically so the watch better knows how hard to push you.

Cost and Value
The Polar watch costs a bit more than other fitness trackers on this list, but it does come with a fully fleshed out support network designed to keep you training right. This is a good watch if you are specifically into running.

10. Motiv Ring

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
86
Motiv Ring
Accuracy
86
Water Resistance
86
Battery Life
86
Apps
86
Comfort
86
best offer for today
$199.99
Pros:

Very mobile

Tracks heart rate, amount of sleep

Durable

Can be used for security purposes as well

Cons:

Harder to check your current health statistics

The Motiv Ring is very unique on this list because it fits like a ring on your finer, rather than around your wrist. This has many advantages.

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Ring Advantages
The Motiv Ring works by having a sizing kit sent to your home that you use to find out your personal size, Motiv will then send you a custom fit ring that will stick closely to your finger. This makes it a great choice for people who don't like wearing things around their wrists. It also is much less intrusive and looks like a simple ring.

Features
The Motiv Ring will keep track of your heart rate, your steps, your burnt calories, and the amount of sleep you get in a day. These are sent to your smart phone as a card that you can go over to help you improve your health. It can also be used for security as it can be used as your two-step verification when logging into an e-mail account.

Cost and Value
The Motiv Ring costs about the same as a smart watch. This is a good choice for many kinds of people. It might be for you if you don't like wearing things around your wrist. It is also durable and stylish looking. it is easy to forget that you're wearing it at all.

Criteria Used for Evaluation

Accuracy

The only way that a fitness tracker can do an effective job of helping you along your path to better help is to give an accurate reading on what your body is doing. the fitness trackers on this list will all do a good job of keeping track of whatever it is they monitor, but the best will be at the top of th elist. Fitness trackers keep track of many things. They track heart rate, calories burned, steps counted, reps done, and many other things. Many of these things are also counted in different ways, which makes all the technology packed into such a small object much more impressive. A good way to see the accuracy of your fitness tracker is to compare it to something else. The biggest discrepancy usually find is in the step counter. Try and compare your step counter to another pedometer of some kind. Some fitness trackers only track the movement of your wrist, instead of the better indicator of your hopping step. Try to keep this in mind when buying a fitness tracker.

Water Resistance

Having a fitness tracker that is waterproof opens up many possibilities for you. In terms of convenience, having a fitness tracker that is waterproof means that you never have to take it off. This is great for keeping an accurate reading of your vitals and health over the course of a full day. You can now wear your fitness tracker in the rain, which means that bad weather doesn't have to stop your fitness journey if you want to go on a run. It also means you can shower with your fitness tracker on. This is great because it will reduce the time of taking off and on your tracker. Finally, now you can take your fitness tracker swimming. Swimming is one of the healthiest exercises there are. Being able to track your self through that kind of exercise opens up many more possibilities. Most fitness trackers are rated to a certain depth. For the most part, this will be forty or fifty feet. Fitness trackers still can't be used when you go scuba diving. Always check the amount that the fitness tracker rates itself to.

Battery Life

The more battery life that your fitness tracker has will determine a lot of the convenience of wearing it all the time. The battery life of fitness trackers vary wildly, and are dependant on a few different things. In general, the battery life of a fitness tracker that uses rechargeable batteries will last for less time than one that needs its batteries replaced. Some watches that need to be recharged will last for around three weeks, while others will need to be recharged once a day. Try to find out what each product claims they will last for. What apps you are using on your fitness tracker will also determine how long the battery lasts. Some of the programs in a fitness tracker take a lot of power to keep running, such as when you are using a GPS, for example. On the other hand, when you use a replaceable battery, your phone will last much longer. Sometimes, a non-rechargeable battery will last for up to six months. This does accrue some extra cost over time. You'll have less to worry about, though.

Apps

There is a wide variety of apps that you can find on your fitness tracker, but even more confusing is that many of them are exclusive to different fitness trackers. Soime fitness trackers don't even keep track of your heart rate. Fitness trackers, more than many other products, should be well-researched before you purchase them. The basics are things like calorie counting, step tracking, and recording sleep. These are good building blocks to a healthy lifestyle. Some fitness trackers will come with an accompanying app that will record an activity log from all of the statistics that it is tracking. This is more than enough to live well on. There are other fitness trackers that have entire app stores where you can download many kinds of apps for many kind of useful things, such as anxiety reduction or specific workouts.

Comfort

This is another very important thing to keep track of when buying yourself a fitness tracker. It is also plainest, and most obvious thing that you'll notice when wearing your fitness tracker. You will often be wearing your fitness tracker for extended periods of time. You should find one with a comfortable band that isn't too tight. Adjustability is a plus as well. A good material that doesn't pull at your skin. Sometimes the clasps on fitness trackers can fall off, as well. Try to find one made of sturdy materials. All of the choices on this list will do a great job. Try to find one that you won't notice resting on your wrist all day.

Expert Interviews & Opinions

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#1
Water Resistance
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#5
Accuracy
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Benefits of Fitness Tracking

Living an active lifestyle becomes more and more important these days. There are so many excuses to not go out and do something. Maybe it's work, or maybe it's the kids, but there can be so many obstacles between you and a solid workout. Something that can help make sure you get the workout that you need is a fitness tracker. A fitness tracker will maximize the efficiency of your workouts because it will let you know exactly what you are getting done. It is also great for tracking sleep, recording your progress, and being able match your life to your goals.

Importance of Durability

The durability of your fitness tracker is also very important. It will be coming with you for long periods of time, and it will probably be getting put through the paces if you plan on doing any exercise with it on. Fitness trackers are quite hardy in general, and they should be totally fine with whatever you plan on doing. This is especially true for these waterproof ones. The big thing that seems to go with some of these fitness trackers is the band. It is the one thing that is put through the most wear and tear. Try to find one that is a good fit for your wrist. The clasp that keeps it locked in place is also very important. Make sure it is made of some kinds of harder metal. The band itself should be made of some kind of durable rubber or plastic.

Other Factors to Consider

Style

Many of the fitness tracker on this list are for different things. They have features that are more apt for a certain task. Some of the fitness trackers on this list are more useful if used as a lifestyle aid. Trackers like the Fitbit are more geared towards keeping track of your day to day activities. They track your steps, calories burnt, and amount of sleep, but they don't have exercises ready for you to look through. The convenience of the Fitbit is its greatest strength. There are also some of the smart watches that will keep track of your pace and will help you do interval training. These are more useful if you are a runner or do want something to keep track of your workouts. These trackers will help you with specific workouts more than with your general health. In the same way, the Motiv is specifically designed to be helpful with swimming. It has features that are most useful to someone who regularly swims like the specific workouts for that and the motion tracking to know what kind of stroke you are doing. This is something to keep in mind when buying your fitness tracker. Try and get one that is best suited to what you need.

Protection

Most of the fitness trackers on this list come with a warranty, and that is an important thing to look for because of how many things can go wrong with a fitness tracker. This is especially true if you plan on taking it into the water, and of course you're thinking that, that's what the list is for. Waterproofing isn't completely foolproof. It is only as powerful as its seal. Try to make sure that the seller for these products offers a warranty. Many of the fitness trackers here offer a thirty-day warranty, at the very least. This is long enough to find out if there is something faulty with the product. Other entries on this list offer warranties of up to a year. These ones are worht a look.

Frequently Asked Questions

q: What is the difference between a fitness tracker and a smart watch?
a:

The amount of content that you're going to get out of a fitness tracker when compared to a smart watch is quite different. The both do track fitness so there are more than few smart watches on this list. The industry seems to be moving towards smart watches, but getting a fitness tracker can be better for their simplicity. A fitness tracker is usually smaller, and lighter. It has fewer features, but will often do those things very well. The classic fitness tracker is the Fitbit. It tracks all of the statistics you might need to get a general picture of your health. It will make it easy to find the places in your life that you have to change around to be healthy. It does a very good job of tracking your vital signs, as well as your steps, your sleep schedule, and how many calories you have burned. A smart watch is a little more general purpose. It will often keep track of your steps, but often it won't track your heartbeat. These are still great fitness trackers, but many of these devices are more focused on giving you the results that you want. Smart watches usually have customizable faces that you can put which ever apps on it that you would like. This means you can choose your experience with your tracker. They both do the same thing, but in slightly different ways.

q: How does a fitness tracker track your vital signs?
a:

Fitness trackers are often packed with ingenius, but simple, devices that can keep track of many factors that occur over the course of a day.

Floors: Fitness trackers will sometimes tell you how far up and down you have gone in a day. This is done through the use of an altimeter, which can tell the pressure differences in the air and extrapolate how far up and down you have gone in a day.

Steps: A fitness tracker will often use an accelerometer to count how many steps you have done in a day. An accelerometer uses your acceleration forward to guess at how many steps you have made. The complexity of the accelerometer will often determine the accuracy of the steps you have accrued in a day.

Calories Burnt: Fitness trackers often guess this based on the information that you have given the fitness tracker. The amount of calories you burn will change depending on things like gender, age, weight, and height. If you put this data with your heart rate and your amount of activity, your fitness tracker can guess the amount of calories you have burnt.