Best Fitness Trackers for Keeping You Fit

Review & Comparison, Last Update June 23, 2021
Get motivated to meet your goals with a tracker that keeps daily stats and shows you time on display. Get some encouragement for being more active throughout the day. We've reviewed 5 best fitness trackers that will help you lead an active lifestyle. Take a pick! ...Read more ...Read less
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BEST 2021
PROS
CONS
OUR VERDICT
TYPE
DISPLAY
SENSORS AND COMPONENTS
BODY METRICS
FUNCTIONS
BATTERY LIFE
PROTECTION
OS COMPATIBILITY
PACKAGE
WARRANTY
 
PROS

It stores minute-by-minute data for 7 days and summary totals for 30 days. You can personalize your activity tracker by purchasing one of the accessory bands (available in a variety of colors).

CONS
The display is rather small.
OUR VERDICT

The Fitbit Alta is a well-balanced fitness watch combining a catchy design and premium materials (including medicine-grade 22 kt gold). It is compatible with Windows, iOS and Android and it perfectly suits any clothing style. 

detailed parameters
TYPE
Wristband
DISPLAY
OLED
SENSORS AND COMPONENTS

3-axis accelerometer, Vibration motor, Bluetooth 4.0

BODY METRICS
Step counting, Distance covered, Calories burned, Tracking the quality of sleep
FUNCTIONS
Inactivity reminder, SmartTrack technology, Automatic exercise recognition, Smart notifications, Silent alarm, Time
BATTERY LIFE
Up to 5 days
PROTECTION
Sweatproof, Rainproof, Splashproof
OS COMPATIBILITY
Windows: Vista and higher, Mac: OS X 10.6 and higher, iOS: iPhone 4s and higher, Android: 4.3 Jilly Bean and high
PACKAGE
Fitbit Alta, Charging cable, Sync dongle
WARRANTY
1-year limited warranty
PROS

The watch has a 210mAh battery that only takes 2.5 hours to charge. Then it works for up to 10 days if you use the watch intensively. In standby time, it lasts for a whopping 30-45 days.

CONS

The watch isn't waterproof.

OUR VERDICT

The LETSCOM company offers not a simple fitness tracker but a real smart watch with great functionality. So, if you need something more professional, this is a stellar choice.

detailed parameters
TYPE

Wristband

DISPLAY

1.3" TFT LCD color screen

SENSORS AND COMPONENTS

Accelerometer, Vibration motor, Bluetooth

BODY METRICS

Heart rate monitoring, All-day activity tracking, Step counting, Calories burned, Tracking the quality of sleep, Relax, Training

FUNCTIONS

9 different sports modes, GPS data, Stopwatch functionality, Find phone, Sedentary alerts & relaxation guides, Smart alarms

BATTERY LIFE

Up to 10 days

PROTECTION

IP68 water-resistant

OS COMPATIBILITY

iOS 8.0/Android OS 4.4 or above

PACKAGE

Charging/data cable

WARRANTY

1 year

PROS

Targeted towards sports, the Lintelek device has as many as 14 exercise modes that can provide you with specific data depending on the activity you're engaged in.

CONS

The step counter is a bit inaccurate. 

OUR VERDICT

The Lintelek fitness tracker is a frills-free bracelet that won't break the bank but will provide you with the most important data on your fitness level and body status.

detailed parameters
TYPE

Wristband

DISPLAY

OLED

SENSORS AND COMPONENTS

Accelerometer, Vibration motor, Bluetooth

BODY METRICS

Heart rate monitoring, All-day activity tracking, Step counting, Calories burned, Sleep monitor, Distance covered

FUNCTIONS

14 sports modes, Connected GPS, Smartphone notifications, Alarm clock

BATTERY LIFE

Up to 5-7 days

PROTECTION

IP67 waterproof

OS COMPATIBILITY

iOS 7.1 & later, Android 4.4 & later

PACKAGE

Charging/data cable

WARRANTY

1 year

PROS

The tracker boasts an advanced sleep monitoring system (with REM sleep) and can gauge blood oxygen saturation levels during the night owing to the wrist-based Pulse Ox sensor.

CONS

The display is prone to scratches, so it's better to get a screen protector.

OUR VERDICT

The Garmin vívosmart 4 is a very stylish and functional tracker that can be used everywhere, from business meetings to swimming pools, to stay on guard of your wellness. 

detailed parameters
TYPE

Wristband

DISPLAY

OLED (0.26" x 0.7")

SENSORS AND COMPONENTS

Pulse Ox sensor, Barometric altimeter, Accelerometer, Ambient light sensor, Bluetooth

BODY METRICS

Health monitoring, Step counting, Distance covered, Calories burned, Floors climbed, Tracking the quality of sleep, Body battery energy monitor

FUNCTIONS

Clock, Auto activity detection, Move bar, Auto goal, Smartphone notifications, Move IQ, Trueup, Activity recognition, Training, Planning and analysis features, Running, Cycling, Swimming, Toe-to-Toe challenges

BATTERY LIFE

Up to 7 days

PROTECTION

Swimproof

OS COMPATIBILITY

iPhone, Android

PACKAGE

Charging/data cable

WARRANTY

1 year

PROS

Fitted with a music player, the watch allows you to play or pause music as well as switch songs without a need to take your phone from the pocket or bag. 

CONS

The call notifications are a little delayed.

OUR VERDICT

Equipped with BP monitor, oxygen sensor, and HR meter, this smart watch and fitness tracker will let you control your health 24/7 and help you understand how your body responds to different kinds of exercises.

detailed parameters
TYPE

Wristband

DISPLAY

1.3" TFT LCD color screen

SENSORS AND COMPONENTS

Accelerometer, Vibration motor, Bluetooth

BODY METRICS

Blood oxygen meter, Blood pressure monitor, Heart rate monitor, Steps and distance counter, Calories burned, Sleep quality tracker

FUNCTIONS

14 sport modes, Smartphone notifications, Music control, Female health tracker, Alarm clocks, Timer, Stopwatch, Adjustable screen brightness, Different clock faces

BATTERY LIFE

Up to 7 days

PROTECTION

IP68 waterproof

OS COMPATIBILITY

iOS 8.0 & above, Android 4.4 & above

PACKAGE

Charging/data cable

WARRANTY

1 year

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Fitbit Alta (FB408SBKS)

Style and Elegance

The Fitbit Alta is arguably one of the best fitness trackers available right now. It boasts decent functionality and tracks your activity with maximum precision throughout the whole day. Aside from that, it also boasts a very stylish appearance and can perfectly suit any clothing style regardless of whether you prefer chic, vintage, sporty or casual fashion style. What adds to the advantages is that it is possible to choose a different band color should the black one be not your cup of tea. The bands for this tracker are produced in a variety of neutral and bright colors.

Speaking of materials, the manufacturer didn't cut corners. It is made of premium-quality materials and there's even some 22 kt medicine-grade gold used so you can rest assured the tracker will serve you faithfully for a long time.

As far as the display goes, you get a high-quality OLED display which is quite large and convenient to use. The menu of the tracker is intuitive and straightforward and all the settings (brightness, clock orientation, etc.) can be changed as you see fit.

To make sure the tracker can fully control your daily activities and achievements, it comes fitted with a slew of sensors. For example, the SmartTrack technology automatically recognizes the kind of exercise you're currently doing so you don't even need to adjust the settings manually. And once the gadget is paired with a smartphone, it outputs all the information about your activities on the screen so you can see who is calling you or who has sent you a message without taking out your phone.

Review of Fitbit Alta (FB408SBKS) Fitness Tracker

Compatible With Any OS

For obvious reasons, fitness trackers don't usually have large screens since those would make their use rather inconvenient. At the same time, they are supposed to analyze quite a lot of data, which can be really difficult to do if you only rely on a small screen. With those concerns in mind, the Fitbit Alta activity tracker was made to be compatible with all modern operating systems, including not only iOS and Android but also Windows. That way, you will be able to connect your tracker to any other gadget that has a large screen, including your PC and laptop, and check your activity metrics there. The sync dongle is included in the set. Many users find this option more convenient, which is especially true of those who go in for sports seriously and want to save their metrics for further comparison.

Fitbit Alta (FB408SBKS) Fitness Tracker in the use

Additional Info

    Manufacturer

Last updated price $220.00
Stock In stock
ASIN B06VXC2FJP

VIDEO
Fitbit Alta REVIEW!

What customers say about this product

Key Specs

Battery life is amazing! I can usually go for about a week before I need to charge it

Size & Weight

The slim design is perfect for my small wrists.

Details

I love the new screen, it is resilient to scratches and the displays are clear with a lot more display options than the Charge HR

Body Metrics

Has an idle alert, so every hour, it vibrates and says "get moving, only 100 more steps", to get you to be more active--and believe me! THat helps when you have an office job!
 

LETSCOM Water Resistant

More Than a Tracker

What we have here is actually not a typical fitness tracker but a fully-featured smart watch with great tracking properties. Yet, it costs like mid-range trackers and can become a great introduction to smart watch world.

Starting with the design, we would like to stress that the LETSCOM smart watch has a large 1.3-inch TFT-LCD touch screen that makes it much easier to view the time, date, steps taken, and calories burnt compared to standard slim bracelets. Also, the large display shows messages, calls, app notifications, and many more. The touch response of the screen is fast and smooth, plus it recognizes gesture directions correctly. As a nice bonus, you can customize the display to your preference and choose from 4 different presets.

When it comes to fitness capabilities, the LETSCOM watch records your activity data 24/7 and then shows summary on your weekly/monthly accumulative data. The watch also allows you to see your fitness targets and control your rhythm of exercises. You can also benefit from Stopwatch functionality to progress in your workouts. By the way, thanks to the Sports Record feature, you'll be able to see the last 7 sports activities on the menu of the watch.

Review of LETSCOM Water Resistant Smart Watch Fitness Tracker

Great Battery Life

Besides the aforementioned smart functions, the watch allows for music control, setting a timer, and sending breathing guides with sedentary alerts. Also, it lets users set up to 10 alarm clocks - the device vibrates at different speeds so you won't ignore it like you may do with a phone vibrating.

Despite such great functionality, the built-in 210mAh battery isn't drained that quickly and needs only 2.5 hours to become full again. Afterwards, it lasts for up to 10 days if you use smart capabilities extensively and up to 30-45 days if you use the watch mainly for time checking. To prolong the battery life, you can turn off the "wrist sense", so the face will only light up when you press the button on the side. With this great battery life and numerous smart capabilities, the LETSCOM fitness watch is a stellar offering for those who need something more professional than typical trackers.

LETSCOM Water Resistant Smart Watch Fitness Tracker in the use

Additional Info

    Manufacturer

Last updated price $30.76
Stock May be out of stock
ASIN B07WZQP556

 

Lintelek Waterproof

The Best Seller

With thousands of positive reviews on Amazon, the Lintelek Fitness Tracker is a top choice among both men and women worldwide, and there're many reasons for that. For one, it's very moderately-priced, making it even a more affordable alternative to famous Fitbits. For two, it looks streamlined and is fairly fashionable and comfortable to wear. For three, it’s fun to use and seems to be fairly accurate.

Targeted towards sports, the Lintelek device has 14 exercise modes that can provide you with specific activity data. Actually, it can track even such activities as badminton and dynamic cycling and then tell you the time spent, calories consumed, and average rates so that you know more about your workout progress and body status. Moreover, if you connect the band to the GPS on your cellphone, it'll show run stats like pace and distance, as well as record a map of your workout route.

Other extras concerning your health include sedentary alerts, sleep quality monitoring, and pulse tracking. Equipped with the latest HR sensor, it'll accurately measure your heart rate throughout the day and night.

Review of Lintelek Waterproof Fitness Tracker with GPS

Cordless Charging

Besides fitness and wellness functions, the Lintelek fitness tracker acts as a message and call reminder. It'll vibrate and show you the information/the caller's name when receiving income messages or calls. It'll also show the notifications from Twitter, Facebook, Whatsapp, and some other messengers and social apps.

With active use, the band can last for approximately 5 days before the battery runs low. Just like many similar models, the Lintelek tracker has a USB plug for cordless charging, and in order to recharge it, you'll need to remove the band and insert the end of the console into any USB port. Once the battery is full, you'll be able to tuck the tracker back into the band. Even after repeated disconnections, the band will still attach easily to the tracker.

For synchronisation with your phone, the bracelet doesn't require a SIM card - it needs just to be connected to the Veryfitpro app on your phone. Having said that, there are some functions that can seamlessly work without a need to be connected to the mobile phone - step counting, sleep, and alarm.

To sum up, the Lintelek Fitness Tracker can become an amazing companion for those people who'd like to live a healthier life. It has no extra frills but can provide you with all the basic info about your fitness level and body status you need.

Lintelek Waterproof Fitness Tracker with GPS in the use
Last updated price $26.99
Stock In stock
ASIN B07PJYHTP3

 

Garmin vívosmart 4

Fashionable and Functional

If you're looking for an ultimately stylish accessory for your elegant wrist, the Garmin vívosmart 4 may catch your fancy. It's a very slim and smart fitness tracker that boasts a distinctive, fashionable design with trim metal accents and an easy-to-read display. The display is only 0.26 x 0.70 inches but it has a good 48 x 128 pixel resolution and is very responsive. When the screen is on, it automatically adjusts to ambient light levels to be well-visible even in bright sunlight. Along with vibration alerts, the tracker shows on the screen all notifications including calls, messages, and more. It even allows you to reply with preset text responses while keeping your smartphone stowed away.

Despite a slim and neat design, this activity tracker is fitted with powerful electronics. It's packed with numerous sensors and a long-lasting battery that provides up to 7 days of intensive use after a fool charge.

Also, this stylish wearable comes loaded with lots of extra features for your wellness. For example, owing to the Body Battery energy monitoring function, you'll be able to check your body’s energy reserves. The unit analyzes your stress levels, heart rate variability (HRV), sleep, and activity data to help you understand your body better. Another nifty function is the All-day Stress Tracking which lets you know whether you're having a calm, balanced, or stressful day. If you're too anxious, the tracker will provide a vibration alert and advise you to "take a moment to breathe".

Review of Garmin vívosmart 4 Activity and Fitness Tracker

Improve Your Sleep Quality!

Yet, what really sells the product is its ability to provide an extensive feedback on your sleep quality. Besides the advanced sleep monitoring system (with REM sleep), the tracker has a Pulse Ox sensor that gives you an overview of your blood oxygen levels during sleep. This can help you gauge how you're absorbing oxygen and learn more about your body. Once you wake up, you can easily check all your sleep stats in the Garmin Connect Mobile app. The same app shows many other useful fitness and health monitoring tools.

Full of fitness and wellness features, the Garmin vívosmart 4 will surely help you live a healthier and more active life. And owing to its ultra-stylish design, it can complement your office, gym, or casual outfit perfectly.

Garmin vívosmart 4 Activity and Fitness Tracker in the use

Additional Info

    Manufacturer

Last updated price $89.16
Stock In stock
ASIN B07GM7WHBG

 

YAMAY 2020 Ver. Smart Watch

Like an Apple Watch

We have included the YAMAY model in our list for those who want a budget fitness tracker and a smart watch all in one. Despite its affordable price, though, this model looks awesome, combining an elegant appearance, which resembles an Apple Watch, with a slew of useful functions.

To kick things off, let's start with its design. Made from durable TPE material, the YAMAY 2020 looks very professional and is sure to withstand rough handling. The wristband is very lightweight and comfortable, plus it is available in five different color options so you can choose the one that fits you most. Also included is a reliable, hidden notch. Thanks to it, you can secure the watch on your wrist firmly and worry not that it might slip when you go running. As we've mentioned, the watch face here looks just like those on Apple Watches but contrary to them, it has a bit more square edges. Plus, just like Apple models, it comes with a magnetic charger, which makes it very high-end and convenient to use.

Speaking of the screen in more detail, the watch has an HD color screen. It allows adjusting its brightness as well as choosing from different dial faces. All notifications show up on the screen perfectly, letting you clearly see who’s calling or texting you. By the way, notifications work similarly to Apple models too - if you’re on the phone when it's ringing, the YAMAY watch won’t notify you about that.

Besides notifications, the extras include a breath guide, female health tracker, alarm clock, timer, stopwatch, and music controller. The latter allows users to play or pause music and switch songs without a need to take a phone from the pocket.

When it comes to fitness capabilities, the watch supports 14 sports modes and provides you with in-depth insights on the exercise you're doing (steps, distance traveled, calories burned). This way, it can motivate you to move and stay active longer.

Review of YAMAY 2020 Ver. Smart Watch Fitness Tracker

Cares About Your Health

What differs this model from most other trackers is a bunch of health monitoring features that can help you understand your body better and make some adjustments to your lifestyle. Actually, the YAMAY 023 fitness tracker can monitor three body's most critical indicators:

  • HR monitor accurately counts your pulse, allowing for exercising at a target heart rate - moderate exercise intensity at 50% - 70% of your maximum heart rate, and vigorous exercising at 70% - 85%.
  • BP sensor monitors your pressure to inform you whether you're overexerting yourself or not.
  • Oxygen meter will tell you how well oxygen is transferred into your bloodstream, thus, helping you prevent happy hypoxia and other health issues.

In all, if you need a helpful tool for monitoring your health and fitness levels at home and on-the-go, the YAMAY 023 watch may be the best bet. It's smart, high-quality, and extremely informative. Plus, it looks so much like an Apple Watch most people won't be able to tell!

YAMAY 2020 Ver. Smart Watch Fitness Tracker in the use
Last updated price $44.99
Stock May be out of stock
ASIN B087C1R9QW

 

Infographics

Comparison of Fitness Trackers for Keeping You Fit

What Is a Fitness Tracker?

How often have you thought about the kind of lifestyle you lead? Eventually, poor diet, sedentary work, and restless sleep will sooner or later lead to one thought - “It is time to change something!”. Start with yourself! Begin to control your activity using a fitness tracker - a gadget that counts the number of steps and other activity metrics throughout a day. This small but smart device will not only control your physical activity but also motivate you to achieve new goals, detecting the time of inactivity and prompting you to do some exercise or simply walk. Some of the trackers come equipped with heart rate sensors that can also monitor your heartbeat, track your sleep and let you share these results on social media later via mobile phone. Still, to achieve the results you need to have a willpower and always push yourself to the limit.

And of course, don’t forget about a proper nutrition which plays an important role in everyone’s life! We recommend adding protein bars to your diet that can help you achieve positive and quick results. If you are an active person and adore sports, make sure to read the review of the best dive watches.

What Features to Compare

Design

To buy a fitness tracker that you will want to wear, consider its design. Today the market offers fitness trackers in all sizes and shapes to meet various needs. Some of them can be worn over clothes - clipped to the belts, pants, etc., while others are designed to be worn traditionally, like a watch, on a wrist. Models that look like a bracelet are the most popular today.

Besides the wristband, consider the screen. It should be of the right size to look and feel comfortable on your hand. Using this screen, you will be able to track the data on your daily activities and receive alert notifications. Most models offered for sale provide the following information: the number of calories burned, the distance covered during a set period of time, the number of steps, and some weekly statistics on your performance.

Features

In general, all trackers are capable of calculating the number of steps, distance covered, and calories burned but some can do even more.

Many trackers can monitor your sleep phases, a handy feature that will be appreciated by anyone who has troubled sleep. Some fitness trackers also feature a smart clock. The advantage of this clock is that it activates only when you are in your light phase of sleep. As a result, getting up in the morning becomes much easier. Furthermore, you can find fitness trackers with a GPS-function and altimeter. These models will come in useful for athletes who are into running and want to trace down their speed.

If you are on a diet and do exercises to lose weight, consider models that provide information on the heart rate. This is important since knowing your heart rate allows entering the fat-burning zone and making training more effective. Basically, there are two options available - one that can “sense” your pulse and the other that "senses" the heart muscle. 

For a complete analysis of your physical performance, the fitness tracker can sync via Bluetooth with your smartphone or PC via a special app. This allows you to set a profile and track your results as well as share them with friends on social networks. When synced with a smartphone, some activity trackers can provide information on the incoming calls or notifications that come to your phone.

Usability

An activity tracker is a device that we don't usually take off. Therefore, it is necessary to pay attention to its usability features. By this, we mean not only extra functions but also whether the tracker is protected against dust, wet, and water. Some of the best models come in a waterproof body and can be worn even when you swim or dive.

Next, consider the battery life of a tracker. Make sure the tracker you choose holds charge long enough for you to use it without a need to recharge it. Note, though, that models with a colorful display drain batteries quite fast.

Did you know?

Different types

Fitness trackers mostly come as wristbands, however, you can also find clip-on activity trackers, earbuds, or even clothing made of smart fabric. Most of them can transmit data directly to the special app installed on your smartphone or computer.

Numbers!

A fitness tracker became the most popular wearable device in 2017. The sales of activity trackers are expected to increase up to incredible 105 million unit shipments (3.33 billion US dollars) till 2022.

How many?

The market of wearable tech is constantly exploding. According to recent surveys, 30% of Americans own a fitness band, and 44% use their fitness gadgets daily.

What for?

Most people mistakenly believe that fitness trackers are only for those people who are engaged in sports. In fact, a fitness tracker is a device for everybody. It was mainly designed to let you know more about your body. It can help you understand how your body reacts to some kinds of activity or, on the contrary, inactivity. It helps you self-analyze your body limits so as to get the basic health data of your body (heart rate, metabolism rate, blood pressure, etc).

Boost productivity

Some surveys show that employees wearing activity trackers or smartwatches reported an 8.5% increase in their productivity and even increase in job satisfaction (3.5%).

Statistics

1 in 6 adults in the world currently uses some piece of wearable tech. Most of them are between 18 and 34 ( up to 48%).

Owners of smart wearables are more likely to be upper middle class. More than 29% of owners make more than $100,000 per year.

A tracker can tell you so much…

Unbelievable, but an activity tracker can reveal you much more than you can imagine. Besides counting steps, monitoring your sleep quality, heart rate, and calories burned, it knows:

  • Whether you’re pregnant. Of course, it won’t show you two strips but can give you some prompts. There was a case when a tracker showed a sharp spike in the resting heart rate of a pregnant woman. The spike lasted for several days and future parents figured out that the raised heart rate identified a baby in a womb. The heart works harder to get extra blood to the uterus when a woman is pregnant.

  • When you’re intimate. Not only can workouts make your heart rate racing! Some fitness bands can track those sexy times and then make this data public through apps. So, it’s better to carefully read the manual to find out everything your tracker can do.

  • If you’ve committed a crime. Really! You should be very careful with the data you put online through fitness apps. There were numerous cases when a person claimed to sleep whilst some crimes were committed. A fitness tracker and an elevated heart rate proved the opposite.

  • When you’re in pain. Doctors sometimes use fitness trackers to find answers on what triggers pain. Trackers can capture even the slightest spikes in your heart rate and activity patterns, which professionals use to find out the specifics of your pain cycle.

FAQ:

Q: What are fitness trackers used for?

A: They are used to keep track of your physical activities but these gadgets do a lot more than that. Thanks to the smart sensors and software, an activity tracker not only tells you how much you move during a day but also monitors your sleep, counts calories you burn, and even wakes you up in the morning with a gentle vibration. In a nutshell, this device helps you keep fit.

Q: How does a fitness band know how much I move?

A: Any activity tracker is equipped with a 3-axis accelerometer that detects your movements in any direction. Bases on this data, the software counts an approximate number of calories you've burned. Some models also have a gyroscope that measures orientation and rotation. The most advanced models also have an altimeter that tracks the height you are at. Trackers may be equipped with heart rate sensors. The more sensors there are, the more functional the device will be and the more information it will output. Needless to mention, the more sensors, the higher the price.

Q: Do activity trackers have displays?

A: It depends on the model. In general, activity trackers work via a special app installed on a portable device (a smartphone, for example), so they don’t need a large display (unlike smart watches). However, most of such devices have a screen that shows you the time and some other functions.

Q: How to connect an activity tracker to a smartphone?

A: These devices are paired with smartphones via Bluetooth connection. Turn Bluetooth on on your phone and wait till it detects the tracker. Then, finish the pairing process. Before doing so, download and install the appropriate application. Each manufacturer develops the app for its own lineup of fitness bands.

Q: Can I take shower or swim wearing a fitness tracker?

A: It depends on the model you use. The majority of activity trackers are sweat-, rain-, and splash-proof, however, they aren’t waterproof. It means you shouldn’t use them while taking a shower, swimming, let alone diving (for which special dive watches are required).

Q: What smartphones are activity trackers compatible with?

A: The majority of activity trackers are compatible with Android and iOS smartphones but check what versions are supported. For example, if a device requires at least Android 4.4, whereas your smartphone has Android 4.0 or one of the earlier versions, the two gadgets will not be compatible.

Q: Can I receive calls and messages on a fitness tracker?

A: No. Some models support notifications, which means they show you the caller id and vibrate in the case of an incoming call. Yet, you still need to use a smartphone to receive a call.

Q: How long can an activity tracker work on a single charge? How do I charge them?

A: It depends on the model. Most gadgets can work for about 5-7 days on a single charge. Most activity trackers are charged through a USB port. Therefore, you can easily connect a tracker to your laptop, computer, or any other device with a USB port.

Sources:

1. David Nield How to Buy a Fitness Tracker: Everything You Need to Consider, Wareable. May 16, 2016.

2. Valentina Palladino Fitness Tracker Buying Guide, Tom's Guide. February 10, 2015.

3. Jediah Porter How to Choose the Best Fitness Tracker, OutdoorGearLab. November 27, 2015.

4. How to Choose the Right Fitness Tracker, SkinnyMs.

5. How to Choose an Activity Tracker, Good Housekeeping.

6. Anick Jesdanun How to Choose a Fitness Tracker When They All Sound the Same, Phys.org. July 20, 2016.

7. Fitness Tracker Buying Guide, Consumer Reports. August 2016.

8. Nancy Ripton How to Choose the Best Fitness Tracker for Your Lifestyle, Best Health.

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