Best Fitness Trackers for Keeping You Fit

Review & Comparison, Last Update October 31, 2018
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
BEST 2018
PROS
CONS
OUR VERDICT
TYPE
DISPLAY
SENSORS AND COMPONENTS
BODY METRICS
FUNCTIONS
BATTERY LIFE
PROTECTION
OS COMPATIBILITY
PACKAGE
WARRANTY
 
PROS

More than 15 fitness activities available allow you to select the appropriate one and receive stats in real time. Thanks to the personalized guided breathing feature, you'll know when it's time you need to normalize your breathing.

CONS

Auto brightness does not work properly.

OUR VERDICT

On buying the Charge 3, you'll get everything you’d expect from a high-quality fitness tracker. Due to its amazing battery life, reasonable price, and a broad range of activities, the Charge 3 is a great accessory to wear daily.

detailed parameters
TYPE

Wristband

DISPLAY

OLED

SENSORS AND COMPONENTS

3-axis accelerometer, Vibration motor, Bluetooth 4.0, Heart rate sensor

BODY METRICS

24/7 heart rate tracking, Step counting, Distance covered, Calories burned, Tracking the quality of sleep, Female health

FUNCTIONS

Smartphone notifications, Automatic exercise recognition, 15+ exercise modes, Goal progress, Reminders to move, Personalised guided breathing, Clock

BATTERY LIFE

Up to 7 days

PROTECTION

Water-resistant to 50M

OS COMPATIBILITY

iPhone, Android, and Windows phones

PACKAGE

Charger, S & L bands

WARRANTY

2-year limited warranty

PROS

Fitbit Alta stores minute-by-minute data for 7 days and summary totals for 30 days. You can personalize your activity tracker by purchasing one of 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, premium materials (including medicine-grade 22 kt gold). The item suits any clothing style and will certainly help you keep fit!

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

This slim activity tracker uses a simple CR1632 battery so it never requires charging. You’ll only need to replace the battery once a year.

CONS

The tiny screen is low-resolution. 

OUR VERDICT

The Garmin vivofit 3 activity tracker is a very affordable product that’s best suited for those who want to be able to track their steps and monitor the quality of their sleep. It doesn't have any frills yet it's a solid choice for those who value quality and precision.

detailed parameters
TYPE

Wristband

DISPLAY

MIP display (0.39" x 0.39")

SENSORS AND COMPONENTS

Accelerometer, Bluetooth, Vibration motor

BODY METRICS

Step counter, Sleep monitoring, Calories burned, Distance traveled, Intensity minutes

FUNCTIONS

Auto activity detection, Move bar, Auto goal, Smartphone notifications, Clock, Tells “Time to Move”, Move IQ, Activity recognition

BATTERY LIFE

Up to 1 year

PROTECTION

Swimproof

OS COMPATIBILITY

iPhone, Android

PACKAGE

1 x CR1632 battery, Band with regular fit

WARRANTY

1-year warranty

PROS

The unit has its own USB plug. All you need to do is connect it into a corresponding port on a USB block or computer. No additional cables and docks required.

CONS

The display isn't well-readable under the direct sun.

OUR VERDICT

It’s an excellent band for those who want a fitness bracelet with smart functionality. It will show you all notifications and let you keep your phone in your bag. You'll never miss on important things that matter to you.

detailed parameters
TYPE

Wristband

DISPLAY

OLED 0.96"

SENSORS AND COMPONENTS

Accelerometer, Bluetooth 4.0, Vibration motor, Heart rate sensor

BODY METRICS

Heart rate monitoring, Steps, Calories, Distance walked, Active minutes, Sleep quality 

FUNCTIONS

14-sport tracking, Smartphone notifications, Alarms, Camera control, Sedentary reminder, Clock

BATTERY LIFE

Up to 7 days 

PROTECTION

IP67 water resistant, Sweat-proof, Rain-proof

OS COMPATIBILITY

iPhone, Android

PACKAGE

USB charger

WARRANTY

1-year warranty

PROS

You can set up to 3 different sports modes to display on the tracker screen. And after connecting your phone's GPS, you'll be able to view a workout route in the app.

CONS

Device resets on sync if a time zone change occurs.

OUR VERDICT

The Letsfit Fitness Tracker is very simple to use, which makes it an ideal gadget for people looking for their first fitness tracker. It’s not over-bloated with extras but all useful features are there.

detailed parameters
TYPE

Wristband

DISPLAY

OLED 0.96"

SENSORS AND COMPONENTS

Accelerometer, Bluetooth 4.0, Vibration motor, Heart rate sensor

BODY METRICS

Heart rate monitoring, Steps, Calories, Distance walked, Active minutes, Sleep quality

FUNCTIONS

14-sport tracking, Smartphone notifications, Alarms, Camera control, Sedentary reminder, Clock

BATTERY LIFE

Up to 7 days 

PROTECTION

IP67 water resistant, Sweat-proof, Rain-proof

OS COMPATIBILITY

iPhone, Android

PACKAGE

USB charger

WARRANTY

1 year

Fitbit Charge 3 FB409GMBK

Excellent for Daily Use

The Fitbit company has successfully redesigned its most popular activity tracker, the Charge 2, with the Charge 3 model. Although the new Fitbit’s flagship device doesn't bring any groundbreaking features and is probably not so smart as Apple Watch, it’s definitely a good activity tracker you’d consider wearing every day. To begin with, it tracks a pretty broad range of activities as well as your steps, calories burned, heart rate, and sleep quality. It’s very accurate and can automatically detect the type of your workout activity. However, it has one significant thing missing - onboard GPS. This means that you’ll need to have your phone with you to be able to use all of its features.

The Charge 3 offers such features as Exercise, Relax, Timers, Alarms, and Weather. You can set the alarm through the Fitbit app on your smartphone. We would like to point out that the tracker is also offered in the NFC-enabled special edition. Besides NFC availability, that model also has a Wallet app for Fitbit Pay. Currently, the Fitbit company is also working on Leaderboard and Calendar apps for all Charge 3 variations.

Battery life is the area where this activity tracker really shines. Its battery lasts so long that you’re likely to lose the charging cable (although we hope you won't). It can last up to 7 days after a full charge. It’s probably the Fitbit’s biggest edge over other big names.

Review of Fitbit Charge 3 FB409GMBK Fitness Activity Tracker

Fits Your Style

The tracker is made of aluminum rather than stainless steel, which results in the lighter weight yet bigger screen. The screen is monochrome OLED that makes the watch faces seem as lively as possible. The screen is fully touch-enabled, which makes navigating through menus and apps easy. The tracker also has an inductive home button on its left side, which is so discreet you may not even guess it's there, unless you're told so or you've read the manual.

A new swappable band system is extending out of the screen. The swapping mechanism is quite simple and original band looks more like a classy watch band than a fitness tracker. Besides, you have an option to select any other band, if you don't like the classic one. Fitbit offers a huge variety of stylish bands at various price tags.

With such attractive design, long battery life, numerous apps, and accurate activity tracking, the Charge 3 is definitely one of the best accessories to wear daily. Despite the fact that it doesn't have smartphone functionality (Fitbit has some room for improvement), the Charge 3 offers all other conveniences you usually expect to see in a high-quality fitness tracker.

Fitbit Charge 3 FB409GMBK Fitness Activity Tracker in the use

Additional Info

    Manufacturer


 

Fitbit Alta

Style and Elegance

Fitbit Alta collects a lot of important data about your activity throughout a day. Moreover, this gadget boasts an eye-catching design so it perfectly fits any clothing you wear. If for any reason you don't like black band supplied in the package - choose another one (several colors are available). The gadget is made of premium-quality materials - even some 22 kt medicine-grade gold is used! Therefore, Fitbit Alta fitness tracker can be worn instead of a wrist watch. The display of the gadget can be easily adjusted to your personal preferences, so you can pick the most convenient settings (brightness, clock orientation, etc.). This device has lots of sensors that allow you to fully control your daily activities and achievements. For example, the SmartTrack technology automatically recognizes the kind of exercise you are currently doing. Therefore, you don't need to set your gadget manually. Once paired with a smartphone, the display will show you incoming calls, text messages, messages on social networks, and so on. Thus, you won't need to touch your smartphone! Activity trackers have already changed lives of million people worldwide and Fitbit Alta is certainly one of the best gadgets for keeping fit and living a healthy active life. Top style. Top quality. Top efficiency.

Review of Fitbit Alta Fitness Tracker

Compatible With Any OS

Activity trackers are created to monitor activity metrics, which means such gadgets are supposed to be compact and lightweight as they are used during workouts. Needless to say, compactness means a small display. Fitbit Alta activity tracker is surely suitable for the toughest gym workouts. And it doesn't matter what kind of smartphone (or any other portable device) you use since Fitbit Alta is compatible with all of the best operating systems. You will always be able to check your activity metrics on the screen of your smartphone! Moreover, connecting the gadget to a computer is not a problem too. If your PC or laptop has no built-in Bluetooth, you can use a sync dongle (included in the package). Why is it convenient to use Fitbit Alta with a PC? The reason is quite simple: all the graphs and charts are much easier to analyze on a large screen. The tracker stores your metrics for up to 30 days and you can sync the device with your smartphone or computer anytime you wish.

Fitbit Alta Fitness Tracker in the use

Additional Info

User Manual     Manufacturer


VIDEO
Fitbit Alta REVIEW!

What customers say about this product

Key Specs

The battery life, for me, lasts approximately a week. It takes maybe an hour to charge.

Size & Weight

The slim design is perfect for my small wrists.

Details

The call vibrating feature is amazing because for some reason I can never hear my phone ringing.

Body Metrics

You can either tap the screen OR just turn your wrist down & then up and it shows the time, distance, steps, etc
 

Garmin vivofit 3

Super Simple

The Garmin Vivofit 3 is a lower-range wearable that offers some great features. It comes with a silicone band (white, black, or camo) that wraps around your hand fairly snugly and is comfy to wear 24/7. The clasp has a durable locking mechanism that prevents it from ripping even if you wear it while doing some extremely vigorous exercises. And, it's 5 ATM rated, meaning it is safe to use while swimming in a pool or when taking a bath or shower.

The Garmin activity band has a tiny display that offers five watch faces - 3 digital and 2 analog. The display can work in two modes - full screen and split screen. In the “Full screen”, the tracker allows you to flick through stat screens pressing a single button; in the split-screen mode you get access to the home page with a stat read-out at the bottom. Regarding the data displayed on the screen, you can view such stats as distance, calories, steps, time/date, and ‘intense’ activity minutes - same as with any other tracker. For better convenience, you can download the Garmin Connect app to your phone. With it, you will not only get better reading options, you will also get access to a variety of graphs showing you what progress you've made during one (several) week(s) or month(s). Additionally, the Garmin Vivofit 3 allows you to track the quality of your sleep by showing you the light and heavy periods of your sleep. All these and other activities that you do daily are recorded in the memory of the tracker and synced to your smartphone via Bluetooth.

The weak points: the tracker doesn’t provide a smartwatch functionality and has no altimeter, GPS, and heart rate sensor. That said, what it lacks in functionality, it more than makes up for in convenience of use and accuracy.

Review of Garmin vivofit 3 Activity Tracker

A Tracker You Won’t Ever Need to Recharge

The advantage of this tracker over competition is that it doesn't require charging. It uses a single CR1632 battery that holds out for a year or so. This means you'll need to remember to replace it on time, however, if you ask us, it's a minor inconvenience compared to having to charge it several times a week, which you'd have to do with a majority of fitness trackers. The Garmin Vivofit 3 has a small low-res screen that is monochrome and easy to read even in direct sun, which makes it a handy option for athletes and runners.

So concluding everything we said above, if you were looking for a simple-to-use, accurate and frills-free tracker to wear every day, we couldn't recommend you the Garmin Vivofit 3 highly enough.

Garmin vivofit 3 Activity Tracker in the use

Additional Info

    Manufacturer


 

LETSCOM LS-001

Super Accurate

At a fraction of the cost, LETSCOM offers you a fitness tracker that, by its functions, can easily outperform bigger brand names. See for yourself. The LETSCOM LS-001 is made of high-quality rubber that is both durable and very pleasant to touch. Though the module is available only in black, the manufacturer provides you with the choice of different band designs so you can customize the tracker and go down with the style you prefer. Speaking of the module, it's easily removable from the band for recharging. The tracker has its own USB plug allowing you to connect it to your computer or a corresponding port on the USB block. No additional cables or docks required! The full charge takes roughly 60 minutes, which is twice less than the average charge time of most fitness trackers. Yet, its battery lasts the same one week. The fitness tracker has an OLED touchscreen display which is crisp and clear and easy to navigate. Some users wish it were a bit brighter for more comfortable use outdoors, however, if you don't intend to use it right under the sun you will not have problems with its brightness. The thing you should appreciate about the LETSCOM LS-001, especially seeing as it's so budget-friendly, is that it has excellent protection against water (IP67), sweat and dust. Which means if you ever get caught in a heavy rain, the tracker won't be damaged. Finally, you're likely to be amazed with the accuracy of the watch. Though cheaper than more famous brands, the LETSCOM LS-001 doesn't lack in terms of performance, providing precise stats on the same number of activities.

Review of LETSCOM LS-001 Fitness Tracker HR, Activity Tracker Watch

Smarter than Average

Besides being super accurate, LETSCOM offers users a multitude of features. Here are some of them:

  • 24-hour heart rate monitoring
  • Sleep quality monitoring
  • All-day activity tracking
  • Calorie Counting
  • Super-accurate pedometer
  • Connected GPS
  • 14 different sports modes (workout, running, spinning, dancing, yoga, and more)
  • Music control
  • Remote camera shooting
  • Anti-lost alert
  • Sedentary alert
  • “Find phone” function
  • Smart notifications
  • The Ability to Take Calls and Messages
  • Calendar, SMS, SNS, and more.

As you see, this mighty one can do almost everything. With it, you can keep your phone in your purse or back pocket while being able to answer phone calls, reply to messages, and do many other things via the watch screen.

LETSCOM LS-001 Fitness Tracker HR, Activity Tracker Watch in the use

Additional Info

    Manufacturer


 

Letsfit ID115Plus HR

For Beginners

The LETSCOM LS-001 is a reasonably-priced wearable device for all-day activity tracking. It accurately counts steps, distance, calories burnt, and your active time. It easily records such exercises like walking, running, riding, running on a treadmill, fitness activity, spinning, yoga, and 7 more. Also, it doubles as a heart rate monitor that can track real-time pulse continuously and alert you about the peak rate. The heart rate is measured by a light sensor, and if your arm is dry (an important condition), the accurate values are guaranteed.

The LETSCOM LS-001 is capable of tracking your sleep duration and its consistency. Other extras include a sedentary alert, remote camera shooting, as well as call, SMS, and SNS notification. It's also worth mentioning that the tracker uses a special wrist sense technology which allows the display to light up every time you turn your wrist towards you so you can see the time or other stats at a glance.

The LETSCOM LS-001 is fairly light and looks very cool. The strap has a nice silky texture on the inside and is comfortable to wear all day long. When you need to charge the watch, it's enough to pull the straps off to reveal the plug. According to feedback, the fitness tracker can hold the charge for 7 days and can last even more, if you turn off the auto heart rate measurement.

Review of Letsfit ID115Plus HR Fitness Tracker HR, Activity Tracker Watch

Easy Start

Setting up the tracker is easy. All you need is to install the VeryFitPro app and proceed with clear step-by-step instructions. To download the app, you can either scan the QR code from the user manual or look for it on Google Play store. We would like to point out that the fact that it’s an official app located on Google Play store signifies that you get some reassurance over the quality and security of the app. Within the settings of the app you can select the required settings and choose what kind of notifications you'd like to receive. There, you can also set whether you want to receive alerts when someone sends you an SMS, email, or message in social apps.

The app shows summaries of your activities, sleep quality, and heart rate. You can also see clear graphs of your progress over a week, month, or even the whole year. All this makes it an ideal gadget for those who are looking for their first fitness tracker. It’s not over complicated and it has all useful features most of us really need.

Letsfit ID115Plus HR Fitness Tracker HR, Activity Tracker Watch in the use

Additional Info

    Manufacturer


 

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’d like to use and wear, consider its design. The market today offers the devices of all sizes and shapes to fit a wide audience. Some of them can be worn on clothes, clipped to belts or pants or just worn in a common way, on a wrist. Fitness trackers that are much favored among customers today are those that resemble a bracelet with a small information display. There you can find a lot of useful readouts on your daily activities and receive alert notifications. The most advanced activity trackers support the following metrics - calories burned, distance walked, the number of steps, and some weekly statistics on your performance. For sportsmen, all these functions would be of great use, no doubt.

Features

In general, all trackers are capable of calculating the number of steps, distance covered, and calories burnt but some can do even more. People who often have a troubled sleep would appreciate using a feature on tracking their phases of sleep to know exactly what to correct in their lifestyle to solve this issue. Some trackers feature a smart clock that would wake you up only when you are in your light phase of sleep so that getting up isn’t such a chore. Or you can set this time yourself, knowing at what time you feel fit to get up. There are trackers with GPS-function and altimeter; they’ll come in handy for runners and other sportsmen who’d like to trace down their speed. People who do exercises to burn fat and need to monitor their heart rate in order to make training more effective should check out Heart Rate feature (although most modern models have got one). Basically, there are two options available - one that can “sense” your pulse with an infrared sensor and the other attached to the chest to sense the heart muscle. For a complete analysis of your physical performance, the 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 your friends on social networks. When synced with a smartphone, some activity trackers can display information on incoming calls or notifications from your phone. This feature is useful for people who do not want to use the phone constantly but rather take a quick glimpse on the wrist to know whether to bother or not.

Usability

An activity tracker is a device that will always be with you wherever you are and whatever your condition is. Therefore, it is necessary to pay attention to the usability of the device since it should provide protection against dust and moisture. For example, if you wear a fitness bracelet on your wrist all the time, you get sweaty when exercising and, as a result, sweat might damage the electronics. So, choose the device that is fully protected from moisture. Some models are highly water-resistant, so you can even swim or take a shower wearing them. The functionality and design of the tracker will affect its battery life. The majority of modern trackers should be charged at least once a week. No need to mention, the device with a color display must be charged every 3-4 days, but in any case, it will be less frequent than charging a smartphone. If you pick a device that can do nothing but only count steps, it won't consume a lot of energy at all, even if you sync it with your smartphone to send statistics.

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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