The bezel is not only a nice decorative element but also a convenient way to navigate through apps and settings. It allows you to make calls, accept notifications, scroll through screens, lists, apps, etc. Thanks to the "Always On Display" feature, you'll always have "main" screen lit up so that you can get all the information you need.
It lacks some useful apps.
The Samsung Gear S3 Frontier has a premium design that combines the elegance of analogue watches and the functionality of fitness trackers. Its bright AMOLED-display with a resolution of 360 x 360 pixels ensures crisp and clear images. A heavy-duty Corning Gorilla Glass SR+ glass and IP68-rated body allow you to use the watch even in pool and extreme weather conditions.
AMOLED touchscreen display
Call, Text, Email, Social media notifications, GPS Glonass, Accelerometer, Barometer, Gyro sensor, Heart rate monitor, Ambient light sensor, Auto exercise tracking, S Health, Samsung pay and more
Bluetooth 4.2, Wi-Fi, NFC
Android and iOS
IP68 dust, dirt and water resistance
up to 4 days
This Bluetooth smartwatch can record music, and its memory is enough for more than 300 music tracks. You can always connect wireless headphones to watch and listen to your favourite tracks. So, you can leave your phone at home and go running. Very convenient!
The strap doesn't lay completely flat.
The Fitbit Unisex Ionic is a fitness-oriented watch that looks very stylish and sporty. The gadget runs on the Fitbit OS and boasts many useful functions. It can track your heart rate 24/7 and notify you about such issues like sleep apnea, strange heart rhythms or beats. Thanks to a capacious battery, the watch can operate for 4 days without recharging. A high class of water resistance allow you to swim and dive with the watch on.
LCD touchscreen display
Call, Text, Email, Social media notifications, GPS Glonass, Sleep stages, Resting heart rate, Cardio fitness level, Female health tracking, Accelerometer, Gyro sensor and more
Bluetooth, Wi-Fi, NFC
iOS, Android, Windows
Water-resistant up to 50M, Dust-resistant
up to 4 days
You can choose a model with 4G connectivity which supports usual SIM-card as well as eSIM. This means you can use the watch independently of your smartphone. This feature is useful for those who want maximum connectivity. If your phone dies on a night out or you forget to take it, for instance, you'll be able to make phone calls using this watch.
The clip on the charger is rather flimsy.
The Huawei Watch 2 Sport is the best Android Wear 2.0 watch. With the bunch of useful features, it's considered to be a cheaper Apple Watch 3 alternative. It's aimed at fitness enthusiasts and for those people who want to stay connected even if they’re away from their mobile phones. The model is compatible with all standard 20mm straps, so you can replace the original one with any other strap you like.
AMOLED touchscreen display
Call, Text, Email, Social media notifications, GPS Glonass, Heart rate monitoring, Real-time guidance, Workout data report, Accelerometer, Barometer, Gyro sensor, eSIM/SIM, 4G Network and more
Bluetooth, Wi-Fi, NFC
Android and iOS
IP68 water and dust resistance
up to 1.5 days
Although this model doesn't feature GPS onboard, it comes with pre-installed Google maps. So, after wireless synchronization with your smartphone, you won't get off the road. Unlike the majority of other smartwatches, this one looks fabulous and is targeted towards people with small wrists.
The battery life could be longer.
The Fossil Gen 3 Smartwatch Q Venture has a classy, slim, and feminine design. If you need, you can swap any 18-mm straps to match the watch to your look just in seconds. The watch is not only nice-looking but also pretty functional. It'll allow you to answer calls, playback music tracks, and keep an eye on your fitness activity. Although the Q Venture is not as feature-rich as some other high-end models, you will never want to take it off!
AMOLED touchscreen display
Call, Text, Email, Social media notifications, Alarm clock, Pedometer, steps, Distance and calories burned, Google maps enabled and more
Bluetooth 4.1, Wi-Fi
Android and iOS
IP67 water and dust resistance
up to 1 day
The watch comes with its own Fitness app that can provide you with such fitness data as taken steps, calories burned, heart rate and time spent on your workout. If you want, you can go to Google Play and download more fitness-dedicated apps like Google Fit, Strava, Runkeeper, Sleep for Android and more. The possibilities are endless!
No UK adapter in the box.
The Ticwatch E is an excellent buy for tech lovers looking for an affordable and well-built smartwatch that can easily perform basic tasks and track their physical activity. It's truly the champion of quality/price ratio. It impresses with its simple design and an incredible list of features. It looks classy and can be good for use both in the gym and in the office.
OLED touchscreen display
Call, Text, Email, Social media notifications, Heart-rate monitor, Proximity sensor, Accelerometer, Gyroscope, e-Compass, GPS, Google assistant, SHAZAM and more
Bluetooth 4.1, Wi-Fi
Android and iOS
IP67 water and dust resistance
up to 2 days
Samsung Gear S3 Frontier
Smart Options Wrapped up in a Classy Look
The Samsung Gear S3 Frontier Smartwatch is designed to take adventures as they come! It's a fantastic smartwatch in many ways. It can tell you the time, give you reminders, allow you to access the calendar, make and receive calls, type text, and more. It's way more viable as a fitness tracker than other smartwatches. With Outdoor Activity Tracking and Advanced Fitness Tracking apps, the watch will be great for monitoring sports training, daily activity, and changes in your heart rate. Moreover, with Samsung S Health and Bluetooth music, you can go running and stay motivated with your tracks playing in the background even without taking your phone. So, being on the move is even easier with the Samsung Gear S3 smartwatch.
The Samsung smartwatch comes with everything to get you started. It's incredibly easy to setup - just open the box, turn the watch on, and it will automatically sync with your phone. Although it features Tizen-based software and has less app support than Apple Watch or Android Wear, you can still run many thirty-party apps. The user interface is very intuitive. However, the most standout feature of this watch is its rotating bezel - a dial made of strong and premium stainless steel that you can twist to scroll through the screens, lists, apps and to accept calls, reminders, etc. Also, the watch has two side buttons that take you to your apps or back. The buttons are well positioned and have a good feedback. However, you can use a dinky touchscreen if needed.
The Gear S3's 1.3-inch high AMOLED display is crisp, clear and bright. You can choose between 3 modes - "Always on", "Motion to view mode, and "Press button to view mode". With 15 pre-loaded designs, you can transform the look of your watch just by changing clockfaces. Plus, you can download additional faces and widgets for every occasion at the Gear App Store. The "Always on" mode makes the Gear S3 look and feel like a usual analogue watch. Although it's slightly bigger than watches, it's definitely not a TV strapped to your arm. Even on a small wrist, it won't look too big or too awkward. The watch is very comfortable to wear all day and night. You can select a sporty "Frontier" finish or a smart "Classic" look. If you need something that's as much a fitness tracker as a smartwatch, it's better to buy Samsung Gear S3 Frontier. It has a more rugged design and comes with a black rubber strap which is ideal for the gym. Overall, if you look for a feature-rich smartwatch that looks cool, get this.
The Gear S3 is rated IP68, meaning it performs well even in harsh conditions. It can withstand dust, dirt and can be submerged up to 1.5 metres deep in water for up to 30 minutes. This waterproof smartwatch can fit a glass screen protector to prevent scratches from daily use. If an emergency happens, you can press the "Home" button three times and the watch will automatically send SOS messages to people you have chosen to track your whereabouts. Also, the watch stores all your medical information. Even with heavy use, the battery will last for two days. With the "Display off " mode, it can hold up to incredible 4 days, which makes this watch a reasonable choice for hiking tours.
Takes Care of Your Health
If you need a high-quality watch that is packed with lots of fitness features, you've just found it. Like other Fitbit products, the Ionic Smartwatch boasts the superb quality and functionality. It features continuous heart rate tracking, built-in GPS, water resistance, and even guided workouts to help you keep fit. Really, it's the first smartwatch that can guide and coach you to reach your goals, using personalised insights and workouts. Also, the faces allow you to track your steps, calories burned, and heart rate without a need to navigate the menu. As soon as you start an exercise, you will be able to see instant data (distance, time and pulse) on the screen. And once you’ve finished, you’ll see a full summary of your workout. The peculiar feature of this model is a SpO2 monitor. It's a special sensor which measures oxygen levels in your blood and gives a far more accurate heart rate. The manufacturer says that this is the most advanced sensor today that can even alert users to such issues as sleep apnea, strange rhythms or beats. The watch works with leading iOS, Android and Windows mobile devices and gives you access to popular apps and payments. Also, it can store and play more than 300 songs to keep you inspired. It has an impressive 4/5-day battery life, which gives it the edge over the rivals. So, you can easily head away for the weekend trip without packing extra cables.
Another benefit of the Ionic watch is that it’s waterproof to as many as 50 metres. Therefore, you can wear it not only in a shower but also in a pool to record how many lengths you’ve swum. The Fitbit is well-constructed and comfortable to wear. Thanks to the grouping of the Bluetooth, GPS, and Wi-Fi antennas, the watch is relatively thin. Three buttons are hugging the Gorilla Glass LCD screen. One of them is for powering up the device, while two others are for in-activity selections and accessing different apps. The screen is very responsive, yet a bit slow. The package includes both large and small quick release/attach straps to suit any wrist. We would like to note that Fitbit has designed its own regular and sports accessories for this smartwatch. All of them have a traditional watch-like adjustable clasp. Overall, the watch feels comfortable on the wrist and, compared to the majority of other smartwatches, is pretty lightweight. So, it's a comfortable fitness-oriented smartwatch.
The benefits of Fitbit App
Fitbit app can track your taken steps, distance, calories burned and active minutes. You can set your exercise goals, and the app will automatically track them.
Install Fitbit Coach on your mobile phone, tablet, or PC and get personalised workouts anytime, anywhere. You will be able to get step-by-step exercises customised specifically to your fitness level.
The watch can automatically track how well you sleep. It uses its continuous heart rate monitor to track your pulse in light, deep and REM sleep. You can look at sleep line graphs in the Fitbit app and understand your sleep quality. You can also receive some tips on how to improve your night's sleep.
Stay Inspired by Fitbit challenges
You can set fitness goals and compete with your friends in Fitbit challenges.
The Best Value for Money
Compared to Apple, Samsung, LG and other leading brands, Huawei offers an excellent value for the money. The main selling point of the Huawei Watch 2 Sport Smartwatch is its battery life. With a 420mAh battery, it can last up to 25 days on a single charge in the "Watch" mode. This mode allows you to turn the Android Wear functionality off when your smartphone is readily accessible and you don't need to use smart features of your watch. Although it's a not-so-smart mode, the watch can not only display time but also track your steps. If used in the smart mode, the watch is claimed to have two days’ battery life. With continuous GPS and heart rate tracking, you can expect for up to 10 hours of battery life.
The watch runs Android Wear 2.0 that offers ultimate control over the watch faces and layouts of the complications. And if you like several different styles, you can quickly switch between them, just swiping left or right. You can select a minimal, traditional-looking face with no complications or fancy faces with vibrant colour schemes. Switching and customising are incredibly simple. The watch enables you to receive on-screen notifications and make payments using Android Pay via NFC technology.
The Watch 2 has an attractive sporty design with a rugged finish. The 20-mm band is made of a silicone material that's comfortable on a wrist but feels a bit cheap. If you want, you can easily replace it with any band you like. The watch looks a bit similar to Samsung Gear S3 but its bezel is non-rotatable. The 1.2-inch AMOLED 390 x 390-pixel circular display is protected with Gorilla Glass 3. The screen is vibrant, easy-readable outdoors and has good viewing angles. Plus, it's fitted with an ambient light sensor that automatically adjusts the brightness. However, the display might seem too small and difficult to navigate complex applications. In general, navigating is slick and responsive.
Your Smart Fitness Assistant
The best part about the Watch 2 is its ability to work independently. If you choose a model with the 4G connectivity, you'll be able to dial out and answer phone calls as well as reply text messages without a smartphone. You just need to install a separate nano-SIM card in the special tray beneath the bottom strap attachment. And if you don't need the 4G facility, you can choose a cheaper non-4G option. With built-in GPS, it offers you almost everything you might need for fitness tracking. The programmable button on the side of the watch can launch the Workout app allowing you to select which activity you’re going to do (run, walk, cycle, fat burn, cardio, treadmill or "other"). The Watch 2 will monitor your pulse, taken steps, calories burned, workout intensity, duration, and distance. After your training session, you'll get an overview of your workout. The heart rate sensor and GPS are very accurate. Although the watch is IP68-rated, it isn't swim-proof and not capable of tracking your laps in the swimming pool.
All in all, this watch can offer a bit more with the 4G compatibility and boasts all-inclusive Android Wear 2.0 features. It's ideal sports smartwatch for people who want maximum connectivity and fitness feedback.
Elegant and Smart
If you're in the market for a slim, stylish, and comfortable smartwatch, the Q Venture is the best pick. It has a small and elegant rose gold case with a thin sand leather strap making it ideal for those who want a compact and nice-looking smartwatch. The great news is that you can replace 18mm straps to your liking owing to a quick-release mechanism. Moreover, you can always customise the face of the smartwatch for every occasion. Just choose a Fossil or Android Wear design, personalise the colour scheme, and then add apps to the watch face.
Packed with the revamped Android Wear 2.0 platform, it ensures a great software experience. The interface runs smoothly and is very responsive and easy to navigate. You won't have any issues with performance. The watch is fast and works well when it comes to sending quick text messages, checking Google Now cards, catching incoming notifications, and answering calls on-the-go. We would like to note that the Q Venture has a mic but no speaker. So, you can use this watch to take calls without the ability to hold up your mobile phone for a call. There’s no rotating bezel or crown, so you’ll need to scroll through the menu using the touchscreen. On the side of the Q Venture, you'll notice a sole button allowing you to access contacts, weather, the Google Play Store, and more. By holding down the button, you can access the Google Assistant to ask it to send messages, check the weather, set reminders, etc. We would like to note that Android Wear performs best with Android phones, and if you have an iPhone, for example, the experience might be a little limiting.
All in all, the Q Venture is one of the best fashion smartwatches for women. Of course, it's not the most feature-rich watch, yet it's subtle in size and very stylish.
The Fossil Q Venture is a powerful smartwatch fitted with Snapdragon 2100 processor and paired with 512MB of RAM. It has 4GB of storage for downloading various apps from Play Market and music tracks for phone-free playback. It comes with Google Fit and Google Fit Workout already preinstalled to let you track steps and reps. The watch has built-in gyroscope and accelerometer, however, it has no GPS and heart-rate monitor onboard. So, you won’t be able to receive accurate information about your run routes, navigation tips, and some other high-end fitness-tracking features. Also, the watch has no NFC connectivity, which means it's impossible to make a payment through Android Pay.
Rated for IP67 water protection, the Fossil Q Venture can survive a quick shower but not a session in the pool. The watch comes with the magnetic charging unit for wireless juicing up. You simply need to plug the unit into a power socket and place your the watch on the charging base. With medium use, you'll get one day of use without recharging.
The Fossil Q Venture is an attractive smartwatch with a vibrant display and a powerful processor. It strikes a perfect balance between comfort, compact sizing, good performance and a reasonable price. It lacks some fitness features and is more fashion-orientated wearable rather than a fitness one.
Affordable Yet Functional
The huge downside of top-selling smartwatches is that they're usually too expensive. Taking this into account, Ticwatch has produced this budget-friendly smartwatch that packs in nearly all the essential features of more pricey and luxurious devices. Of course, this isn’t a revolutionary smartwatch but it’s an excellent entry-level model. The lining of the Ticwatch E is Android Wear 2.0, meaning you'll get an impressive set of useful features, including Google Assistant, GPS, heart-rate sensors, and access to Google Play apps. Inside this smartwatch, there’s 512MB of RAM and 4GB of storage. This capacity is enough for downloading different apps and music albums.
Like most Android Wear 2.0 watches, you’ll find only one physical button around the crown for accessing the list of apps or Google Assistant. Everything else is controlled on the 1.4-inch OLED screen. The display is large, easy to navigate, responsive, and well-readable in the direct sun. You can shift smoothly through the interface and launch apps without a hitch. The Ticwatch E is equipped with a mic and a speaker, so you'll be able not only to give commands to Google Assistant but also take and make calls from your wrist in a Wi-Fi-covered environment. The only thing to note is that the watch has no NFC chip, which means that contactless payments at Android Pay aren’t possible.
As for the battery life, it varies as it does on your phone, tablet, laptop or other gadgets. With basic use, the Ticwatch E can last for two days. The conductive charger that's supplied in the set can power up the watch to 100% in less than an hour.
The Ticwatch E doesn’t look like a smartwatch, really. With zero branding, simple shapes and a classic silicon strap, the design is just right for use in the gym and in the office. It doesn't look chunky or rugged and is stuffed with 21 watch faces to choose from. Some are designed towards fashion, while others resemble an analogue display. All fonts and icons are very tasteful. The Ticwatch E is ultimately comfortable to wear for extended periods of time. The silicone watch strap is sweat-proof and is good for those with both big and small wrists. However, the high mark of its good build quality is its 1.4-inch OLED display. At 400 x 400, the screen is crisp and vibrant. This resolution is even higher than more pricey watches offer. So, if you are choosing the first smartwatch and don't want to spend a lot of money but still need a decent-quality device, don't look further.
Good Smartwatch/Fitness Tracker
Although the smartwatch runs Android Wear 2.0 and has pre-installed Google Fit, the manufacturer has taken a step further equipping it with its own Fitness app. It has a simple interface and provides you with such data as steps, calories burned, heart rate and time spent on your workout. And you don’t need to bring your smartphone to do it! The watch has a built-in heart rate sensor that gathers very accurate information. Thanks to GPS, the Mobvoi's Fitness app can show your travel path. We would like to point out that unlike dedicated sports trackers, the Ticwatch E isn't waterproof - it's splashproof only. Yet, we would definitely recommend this watch to everyone looking for a reasonably-priced Android-based smartwatch/fitness tracker.
What Is a Smart Watch?
A smartwatch is a well-designed computerized wristwatch with a great number of useful features. Nowadays the best smartwatches function as portable media players, providing audio and video playback to a user via Bluetooth earphones. These models are often called 'watch phones'. They feature full cell phone capabilities, and can easily make and take calls. Besides, this gadget can connect to Android or iOS devices and run popular mobile apps. It also can be used as a navigator, a portable media player, a fitness tracker or a messenger. And if a couple of years ago having a smartwatch was considered a luxury, today more and more people seek to buy such a smart companion. If you've decided to strap up with a watch phone, too, you're lucky to have come to this page. In order to make your choice simpler, we've selected only the most popular models of smartwatches for men and women you can buy today.
Another wearable accessory that you may want to consider for purchasing is a fitness tracker. Though it wasn't designed to replace a smartwatch, it has a whole lot of useful functions which can help you in living a healthy lifestyle and doing sports.
What Features to Compare
When choosing a smartwatch, we recommend you to pay attention to the Design. If you think that all the important parts are hidden inside a housing you are quite wrong. Find out everything about the material and display characteristics first hand. Most watches are made of plastic, but some of them are made of metal - these are more durable, of course. Also, the displays are different - some of them are monochrome but the vast majority of smart watches have colour LCD screens that give a fantastic image quality.
The next you should consider are Functions and Compatibility of the chosen smartwatch so as to see whether it's going to be compatible with your OS or not. And surely, the key functions that may differ greatly from one model to another. A good watch that you won't regret should support SMS and calls notifications, allow Internet browsing and run most popular apps (such as iTunes for example). Some watches have a GPS function and can serve as a navigator while used at the wheel. Good smartwatches boast functionality of most common fitness trackers either, and can measure your heart rate, body temperature, pulse, etc.
Watch is worn on a wrist and so, is quite prone to damage, particularly if you're doing some sports. Therefore, decent smartwatches are expected to ensure a high level of Protection. Check whether the model you chose is dust and waterproof. The protection grade can be higher or lower, and the price for a watch is proportionally dependent.
Finally, make sure to consider the Battery characteristics. Smartwatches are all small and as a rule, have rather low-capacity batteries. Yet, if you aren't keen on an idea to recharge your watches every two days, we recommend you to opt for a watch with e-Paper display. These watches compared to the majority of touchscreen models can last for up to 5-7 days on a single charge. Their only drawback is a monochrome screen with a bit slower response time.
Did you know?
The benefits of smartwatches
A smartwatch is a touchscreen wearable computer that often acts as an extension of your mobile phone. The main idea of any smartwatch is to inform you about incoming calls, text messages and other notifications. With a smartwatch, you don't need to take your phone once you feel vibration in your pocket. Instead, you can tilt your wrist and see who is calling or who has sent you a message. This smart device allows you to decide whether the incoming information is worth your attention even without pulling out your mobile phone. Besides showing notifications, a smartwatch can allow you to make hands-free calls by simply talking into your wrist. Any smartwatch also doubles as a health tracker. Smartwatches usually feature built-in heart-rate monitors and accelerometers to track your pulse, taken steps, distance, calories burned, etc. Moreover, some watches have GPS onboard and can track your route and guide you through each step of your workouts. Also, many smartwatches allow you to download or sync up to the music files on your phone to keep you inspired during your training. Another benefit of using a smartwatch is the ability to become a know-it-all. If you use an Android-based (or at least Android-compatible) watch, you can just say "Ok, Google", and the Google assistant will provide you with almost any information you need, from the weather forecast to a healthy diet for your very body type.
Smartwatches can be really useful for new moms
Yes, this smart device can help you watch over your babies. You'll be able to receive alerts if your little one cries. Just leave your phone in the nursery, and you’ll get alerts on your smartwatch if your kid is fussy.
How popular are smartwatches?
The market of smartwatches exceeded enormous $4 billion in 2017. One of six customers uses this wearable tech. Most consumers are somewhere between 18 and 34 years.
How does a smartwatch pair with a smartphone?
Like fitness trackers, a smartwatch connects to your smartphone via Bluetooth technology. A smartwatch typically can't be used to the fullest without a smartphone unless it has a slot for SIM card.
The history of smartwatches
Unbelievable, but the first digital watch entered the market in 1972. It was called "Pulsar" and was produced by Hamilton Watch Company. Later, "Pulsar" became a brand name and was acquired by Seiko. The first wrist terminal that could connect to a computer, the Seiko RC-1000, debuted in 1984. The RC-1000 was powered by a computer on a chip and was compatible with computers of that time, including Apple II OS. The first wristwatch that could transfer data wirelessly to PC was the Timex Datalink watch. It was invented in 1994. And only in 1998, Steve Mann created the world's first Linux watch which was named "the father of wearable computing". In 1999, Samsung introduced the SPH-WP10, the world's first watch phone. It was too bulky with a protruding antenna, an integrated speaker, microphone and a monochrome LCD screen. Since then, the watches have become slimmer, more attractive, and much smarter!
Q: How do smartwatches monitor sleep quality?
A: A smartwatch can track the length and quality of your sleep. It relies on such hardware as a heart-rate monitor, tri-axis accelerometer, pedometer that monitor your movements, shifts, pulse and can tell with good accuracy if you’re rolling over, turning, or sleeping. The collected information is then analyzed to let you see how well and how long you sleep during nights. Also, a smartwatch can help you identify sleep problems and solve them.
Q: How to take care of my smartwatch?
A: First of all, you need to clean it correctly. Smartwatches don't have a regular screen that you can just wipe down with a damp cloth. Turn off your watch and clean the screen with a slightly wet microfiber cloth. Don't use a tissue or a paper towel, as tiny paper particles can scratch the display. It's a good idea to use a microfiber cloth designed for touchscreens. Also, keep away from using chemical cleaners.
Q: How to change the battery?
A: All modern smartwatches are equipped with a battery that needs to be recharged when it dies. And replacing this battery requires mess with the internal hardware. So, it's better to turn to an official service centre if some troubles occur.
Q: Can a smartwatch get wet?
A: Most smartwatches are water-resistant up to a certain level and depth. Almost all models can come into contact with water and be used for taking a quick shower. However, not all of them can be submerged. The smartwatches that are waterproof up to 5ATM can be used in the pool. Yet, you need to keep soap and detergents away from them.
Q: Are wristbands replaceable?
A: Many manufacturers supply the watches with replaceable bands. Some even include several bands in the package for different wrists. So, if you're going to swap out bands, check the chosen smartwatch model and suitable bands for it.
Q: Is there anything a smartwatch can't do so well?
A: Smartwatches are not good for lengthy text contents or news. Although they allow you to answer text messages or emails, this might be a daunting task. Also, snapping photos will not be very effective, since the screen of smartwatches is typically rather small. Playing games is pretty hard as well.
Q: Can I play my music on a watch?
A: Yes. Some models allow you to play music on your phone remotely, while others let you download music directly to your smartwatch and listen to it through a Bluetooth headset. They also enable you to pause and skip music tracks.
Q: Can a smartwatch work without my smartphone?
A: It depends on a model. Of course, all of them have an analogue display which displays time no matter whether they are connected to your smartphone or not. However, they require a smartphone for full functionality (notifications, apps, and activity tracking). Some high-end watches have a slot for a SIM card and can work independently.
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