Top 10 Best Gtr 4 Amazfit

LARGE DISPLAY The large 1.9 inch high-resolution screen has enhanced color and is easy to read, with anti-fingerprint glass. The face is curved to fit naturally on your wrist for comfort and style.. TRACK STEPS, DISTANCE, CALORIES Automatically detects and records all your activities and fitness data, from walking, running, treadmill, rowing and more with 120 sports modes.. RELIABLE HEALTH MONITORING Track heart rate, blood oxygen, stress level monitoring, sleep quality, sedentary reminders, and sleep quality tracking.. FITNESS APP DATA SHARING Easily connect with Strava, Adidas Running, Apple Health, Google Fit, Relive, Komoot to record and share health, steps and fitness data.. UP TO 30 DAYS OF BATTERY LIFE 10 days with typical usage, even 30 days in battery saver mode, so you can keep going without stopping to recharge.. 72 WATCH FACES Easily change the look or your watch or information displayed, or add your own custom photo background.. AMAZON ALEXA READY Set alarms and timers, check the weather, get translations, control your smart home devices, create shopping lists, and more with the Amazon Alexa voice assistant.. BLUETOOTH Using built-in speakers and microphone, you can send text, answer or make outgoing calls and playback music on your Bip 5 through Bluetooth connectivity.. SLEEP RECOVERY View valuable insights into your nightly sleep quality and duration to monitor deep sleep, REM, and light sleep, even track daytime naps too..

MaxTrack Industry-leading GPS Technology Amazfit's dual-band circularly-polarized GPS antenna technology, named MaxTrack, enables this GPS smartwatch to pick up almost 100 percent of satellite signals. This technology reduces multi-path interference in order to track your position with the maximum amount of accuracy, even if you're running in dense cities with tall buildings or parks with high trees.. Personalized AI-powered Running Coach The Zepp Coach harnesses the power of AI to provide personalized running plans, which are generated based on your current level, target race type and date, and your goal for the race. To help you build up to race day in the ideal condition, Zepp Coach will intelligently adjust your plan every week based on your performance, and provide scientific guidance as you progress.. Precise Route Navigation and Offline Maps With this sport watch, you'll always know where to run. Download a color map of the area you plan to run from the Zepp App and import it to the watch, to enjoy a detailed understanding of your surroundings. Pair the map with a matching imported route file and navigate with incredible precision as you run.. Advanced 247 Health and Fitness Data The BioTracker PPG optical sensor enables highly-accurate monitoring of your heart rate, blood-oxygen, stress level and sleep quality. Connect to a heart rate belt when you go running, thanks to the powerful Bluetooth connectivity of the health-centered Zepp OS 2.0.. Streamlined and Lightweight Design Engineered for runners, the Amazfit Cheetah smart watch is built from durable fiber-reinforced polymer. The super lightweight design weighs only 32g and features a responsive crown and button for easy control while running, while the bright and clear HD AMOLED display is easy to read wherever you like to run.. Ultra Long Battery Life Enjoy up to 14 days of battery life with typical usage, or even up to 45 days in Clock Mode. Enable the Automatic GPS Mode and the watch will intelligently adjust GPS settings to save power when you're running in areas with strong satellite signals.. Voice Assistance and Music Storage Take the Amazon Alexa voice assistant with you on your runs to check the weather, set an alarm, and more, all hands-free You can even store music on the watch and listen through connected Bluetooth headphones, and control playback on the watch's display.. Zepp Coach AI Chat Demo Ask Zepp Coach your sports-related questions, and it will recognize your natural language to provide the advice and solutions you need break your limits.. Connect to Fitness Apps Share your workout data to adidas Running, Strava, Komoot and Relive - and even smartphone apps like Apple Health and Google Fit..

Stainless Steel Mud-resistant Design Constructed with super-strong 316L stainless steel and a patented mud-resistant bridge and buttons, Amazfit T-Rex Ultra is built to withstand any kind of action. The smartwatch's HD AMOLED display can reach a peak brightness of 1,000 nits for ultra-clear visibility in any environment. Adjustable lugs ensure maximum comfort for the entirety of your epic adventures, and you can enjoy ultimate control with a responsive touchscreen and four convenient buttons.. 30m Freediving Support As the ultimate multi-environment outdoor smartwatch, the Amazfit T-Rex Ultra supports indoor and outdoor freediving to a depth of up to 30 meters. It can also resist the equivalent of up to 100 meters water pressure, making it perfect for all your swimming, surfing and kitesurfing activities.. Dual-band GPS Route Navigation The smartwatch utilizes both L1 and L5 signals for incredibly precise dual-band GPS positioning, and supports six satellite systems for greater global coverage. Import a route file to the watch along with a corresponding Offline Map, and navigate with professional-level environmental understanding.. Mighty 20-day Battery Life Experience energy beyond extinction, with battery life that can last a super-long 20 days. The sports watch also introduces a new Endurance GPS battery mode for those who love to lose themselves in nature for long periods of time, plus a new Automatic GPS battery mode which intelligently adjusts GPS settings based on signal strength, to help conserve power.. -30 Ultra-low Temperature Operation Built for the brave, the watch is tough enough to be operated in extreme temperatures as low as -30, thanks to its specially designed circuitry system and battery. So not only can the watch body physically resist the cold, but you can keep using the watch's functions as the conditions get more intense.. Military-grade Toughness Resistant to extreme 70 heat and -40 cold - as well as humidity, shock and more - this outdoor smartwatch has proved its toughness by passing 15 military-grade tests. Understand your surroundings better with the built-in compass and barometer, along with environmental reminders and a host of other useful features.. Supported Devices Compatible with Android 7.0 and above, iOS 12.0 and above devices.. Connection WLAN 2.4GHz, Bluetooth 5.0 BLE..

SLEEP READINESS REPORTING Wear your Balance smartwatch overnight for a full analysis and readiness score, combining data from your sleep heart rate, breathing quality, and temperature, to track how mentally and physically recharged you are each day.. BALANCED WORKOUTS Sync to Strava, adidas Running, Apple Health, Google Fit, komoot, and more. Precisely measure steps, pace, distance, and more on your run or walk, and track every movement with industry-leading dual-band GPS accuracy.. HEALTH BODY ANALYSIS Understand your sleep quality and body health in greater detail, with monitoring of heart rate, blood-oxygen, and stress level - along with smart alerts for abnormal health data readings.. BODY COMPOSITION MEASUREMENT Monitor your body fat, skeletal muscle, muscle, water, bone mass, protein, BMI, and basal metabolism to track changes in your body composition. Should not be used by pregnant women, people with implantable pacemakers, defibrillators or other implanted medical apparatus.. ULTRA-LONG BATTERY LIFE With typical use, expect a long 14-day battery life, or up to 25 days in battery saver mode. You'll easily go weeks without having to worry about stopping to charge.. 200 WATCH FACES Quickly change the appearance of your watch face to match your outfit, workout, or mood, or add your own custom photo background.. AWARD-WINNING DESIGN The elegance of a traditional watch, yet with advanced health tracking technology. The light aluminum frame houses a 1.5 AMOLED touchscreen that's durable, bright, easy to read, and covered with anti-fingerprint coating.. 1-TAP HEALTH TRACKING With one touch, measure your heart rate, blood oxygen, stress level and breathing rate.. FULLY CONNECTED Enjoy Bluetooth phone and app notifications, on-board music storage, Amazon Alexa, membership cards, and connect to a heart rate belt and cycling power meter..

Strong Precise GPS Tracking and NavigationThe Amazfit GTR 4 uses industry-leading dual-band circularly-polarized GPS antenna technology - similar to that used in the aircraft and automotive fields - so you can enjoy stronger positioning that's 99 as accurate as top handheld GPS locators. And you can even Import a route file to the watch from the Zepp App and navigate your way along it in real-time..Suported ApplicationMusic Player,Voice Control,Fitness Tracker,Phone,Social Media. Connectivity technologyBluetooth 5.0,Wireless. Wireless comm standardBluetooth. Design Engineered for ActionThe Amazfit GTR 4 is the industry's first smartwatch with anti-glare technology on the glass bezel cover, and the large 1.43 AMOLED display has an anti-fingerprint coating to keep your watch looking pristine. The combination of a one-piece aluminum alloy middle frame and classic stainless steel navigation crown makes the watch a fashionable fusion of vintage and elegance.. Advanced Fitness SuportGet down to business with a huge selection of over 150 sports modes, and suport smart recognition of 8 Sports. The fitness tracker watch can be used to track your swimming data and endure the equivalent of upto 50 meters' water pressure. Get live notifications broadcast through the watch for sports data like heart rate and hydration reminders, distance covered, and more.. Easy 247 Health ManagementThe Amazfit GTR 4 smart watch debuts the new BioTracker 4.0 PPG biometric sensor, you can enjoy more accurate 24-hour monitoring of heart rate, blood-oxygen saturation and stress levels. The heath tracker watch can also detect your breathing rate, and is able to quickly measure these four important health metrics in one easy tap.. Power that Goes the DistanceCrush your professional and workout goals for upto two weeks at a timeand the smart watch's new Battery Saver Mode even enables continued use of features like sports modes, measurement of health metrics, and more, all while saving power.. The Ultimate Personal AssistantAmazon Alexa Built-in and suport Offline Voice Assistant. Via Bluetooth connection to your phone, the watch can be used to receive and answer phone calls. Easily add membership and club card codes from your favorite stores to the watch for simplified shopping..

Strong Precise GPS Tracking and NavigationThe Amazfit GTS 4 smart watch uses Industry-first dual-band circularly-polarized GPS antenna technology, for stronger positioning that's 99 as accurate as top handheld GPS locators. You can even import a route file to the watch from the Zepp App and navigate your way along it in real-time.. The Ultimate Personal AssistantAmazon Alexa Built-in and support Offline Voice Assistant. Via Bluetooth connection to your phone, the watch can be used to receive and answer phone calls. Easily add membership and club card codes from your favorite stores to the watch for simplified shopping.. Easy 247 Health ManagementThe Amazfit GTS 4 smartwatch debuts the new BioTracker 4.0 PPG biometric sensor, you can enjoy more accurate 24-hour monitoring of heart rate, blood-oxygen saturation and stress levels. The watch can also detect your breathing rate, and is able to quickly measure these four important health metrics in one easy tap.. Live Sports Data Broadcast Strength Training ExercisesGet live notifications broadcast through the watch's speaker or your Bluetooth headphones for sports data like heart rate and hydration reminders, distance covered, and more. Dozens of strength training movements can be automatically recognized, and the fitness watch can count your reps and track your rest time between sets. After your workout, the Zepp App will show you the muscle group you exercised and how long you exercised it for, to help keep your training efficient.. Advanced Fitness SupportChoose from a huge selection of over 150 sports modes to challenge yourself, and jump into action quickly with smart recognition of 8 Sports. The fitness tracker watch can be used to track your swimming data and endure the equivalent of up to 50 meters' water pressure.. Super Slim and Light Design Large 1.75 HD AMOLED DisplayAmazfit GTS 4 is an elegant combination of traditional craftsmanship and modern design that comes complete with one-piece aluminum alloy middle frame and gemstone-style stainless steel navigation crown. Immerse yourself in the ultra-large 1.75 AMOLED display, and view the data that matters to your wellness journey in pristine HD clarity..

Position with PrecisionAmazfit GTS 4 Mini smart watch supports 5 satellite positioning systems to help you make the most of your journeys into the great outdoors, and uses circularly-polarized antenna technology to improve positioning performance and accuracy..Water resistance depth50 meters.Supported ApplicationGPS,Voice Control,Multisport Tracker,Heart Rate Monitor,Sleep Monitor. Connectivity technologyBluetooth. Wireless comm standardBluetooth. Alexa Built-in Powerful Zepp OSEasily set an alarm, ask a question, get a translation and more, with the Amazon Alexa feature of the watch. Packed with smooth low power-consuming Zepp OS, which features over 10 mini apps, including the Home Connect third-party app, to help enhance your daily life.. Health Made EffortlessEasily test your heart rate, blood-oxygen saturation and stress level simultaneously with a single tap of the smartwatch, for a result in as quick as 45 seconds. Also, this watch provides in-depth monitoring of sleep quality to keep you on top of your health.. 120 plus Sports Modes Smart RecognitionWalking, running, cycling, yoga, and more. Whichever activity makes you challenge yourself, you'll likely find a sports mode for it on the fitness tracker watch. And Jump into action quickly with smart recognition of 7 Sports.. Swim with ConfidenceA water-resistance grade of 5 ATM means the smart watch can resist the equivalent of up to 50 meters' water pressure. And whenever you fancy a trip to the pool or the beach, the watch's Pool Swimming and Open Water Swimming sports modes can scientifically track your swimming data.. Long-lasting EnduranceThis ultra-compact smartwatch packs a mega-powerful 270 mAh battery, bringing 15 days of endurance on typical usage and up to 45 days of battery life on battery saver mode..

Strong Accurate GPS Tracking From cycling through city streets to walking through wild woodland - wherever your travels take you, support for five satellite systems means the Amazfit GTR Mini watch will be able to pinpoint your position with the kind of precision only provided by Amazfit's patented circularly-polarized GPS antenna technology.. 14-day Battery Life The Amazfit GTR Mini smartwatch packs the power-efficient software and hardware to conserve the battery power you need to crush your goals for up to two weeks with typical usage, and 20 days with battery saver mode.. 120 plus Sports Modes Smart Recognition Whatever workout gets you pumped, the Amazfit GTR Mini fitness watch can likely track data for it. Check your steps, calories burned, and more for over 120 different sports, and get a post-workout report when you're done. The smartwatch can even automatically detect seven sports, so it's easy to jump into action.. 247 Heart Rate, SpO Stress Monitoring The Amazfit GTR Mini is empowered by the health-centered Zepp OS 2.0 to provide 24-hour monitoring of heart rate, blood-oxygen and stress levels. And you can get a result for all three metrics in as fast as 15 seconds with the super-convenient One-tap Measuring function. The watch can be set to send a reminder if it detects abnormally high or low heart rates, low SpO levels, or high-stress levels.. Maximize Your Sleep Quality This health tracker provides In-depth monitoring of sleep quality daytime naps, light, deep rem sleep stages, and sleep breathing quality. Engage the Sleep Mode when it's time to rest, and the watch will reduce display brightness and disable notifications - so you'll be refreshed and ready for action when you wake up.. Slim Stylish Design with Stainless Steel Color outside the lines and embrace what makes you exceptional, with the classy round Amazfit GTR Mini. At a super-slim 9.25mm and lightweight 24.6g, the GTR Mini not only looks compact, but is also very comfortable to wear thanks to its skin-friendly silicone strap..

ALEXA BUILT-IN AND OFFLINE VOICE ASSISTANTEasily set an alarm, ask a question, get a translation and more with Alexa, which is built into the Amazfit GTR 3 smart watch. If youre out and dont have internet access, the smartwatch also has an offline voice assistant for you to perform operations like engaging a sports mode or opening a health metric feature via voice command. Body material-Aluminum alloy .Suported ApplicationBreath Monitor,Continuous Heart Rate Monitor,GPS,Voice Control,Multisport Tracking. Connectivity technologyGPS. Wireless comm standardBluetooth. 21 DAYS LONG-LASTING BATTERY LIFEThe Amazfit GTR 3 activity tracker brings a kind of power and performance that's going to stay with you for a long, long time. Even with the vast array of advanced functions assembled within its slim and light body, the GTR 3 smart watch maintains a refined elegance only found in classic round watches, and yet still finds a way to integrate a powerful battery which can last for upto 21 days.. 150 plus SPORTS MODES GPS BUILT-INWhether youre a team player or prefer the focus of working out by yourself, the Amazfit GTR 3 sports watch is the ultimate easy-to-use device. With over 150 built-in sports modes to suit your choice of activity, the activity tracker can track metrics like steps, calories burned, and more. Come with a barometric altimeter to help keep an eye on the altitude and air pressure of your outdoor activities, and suports GPS, GLONASS, Galileo, BDS and QZSS satellite navigation systems to accurately track your route.. TEST FOUR HEALTH METRICS IN ONE TAPWith the Amazfit GTR 3 smart fitness watch, you can test your heart rate, blood-oxygen saturation, stress level and breathing rate in one single tap, for a result in as little as 45 seconds. Get the data you need and then get on with your day.. VIBRANT WATCH FACES ALWAYS-ON DISPLAYSThe Amazfit GTR 3 smart watch offers more than 100 stylish watch faces, all of which have a matching always-on display. You can choose from 15 animated watch faces and prioritize preferred features with 8 editable watch faces - or even upoad your own photo as the background image. With unprecedented visual clarity that reaches upto 326 ppi, the Amazfit GTR 3 smartwatch has 1.39-inch truly clear easy-to-read HD AMOLED display.. POWERFUL ZEPP OSEasily find what youre looking for among the Amazfit GTR 3 smartwatchs applications thanks to the intuitive Zepp OS. With most animations reaching 60 FPS, along with a specifically tailored UI, the Zepp OS makes navigating to the feature you need a seamless interaction that consumes less power. Experience a mini app framework with a rich ecosystem including 10 plus mini apps and even the Home Connect third-party app..

ALEXA BUILT-IN OFFLINE ASSISTANT Easily set an alarm, ask a question, get a translation and more with Alexa, which is built into the Amazfit GTS 3 smart watch. If youre out and dont have internet access, the smartwatch also has an offline voice assistant for you to perform operations like engaging a sports mode or opening a health metric feature via voice command..Suported ApplicationBreath Monitor,Heart Rate Monitor,GPS,Voice Control,Multisport Tracker. Connectivity technologyGPS. Wireless comm standardBluetooth. HIGH PRECISION POWERFUL NAVIGATION SYSTEMSThe GTS 3 smartwatch has a built-in barometric altimeter to help keep an eye on the altitude and air pressure of your outdoor activities, and suports GPS, GLONASS, Galileo, BDS and QZSS satellite navigation systems to accurately track your route.. 150plus SPORTS MODES 5 ATM WATER RESISTANCEThe Amazfit GTS 3 sports watch is the ultimate easy-to-use smartwatch with over 150 built-in sports modes to suit your choice of activity. It can track metrics like heart rate, calories burned, and assesses specialized data such as maximum oxygen upake VO2 Max, full recovery time, training load and training effect. With a water-resistance grade of 5 ATM, allowing you to enjoy the sea or take a dip in a pool without worry.. TEST FOUR HEALTH METRICS IN ONE TAP Sometimes you just want a quick overview of your health stats without cycling through individual apps. With the Amazfit GTS 3 fitness watch you can test your heart rate, blood-oxygen saturation, stress level and breathing rate in one single tap of the watch, for a result in as little as 45 seconds. Get the data you need and then get on with your day.. IGNITE YOUR PASSION FOR FASHIONThe supr-sleek 8.8mm watch body is made from lightweight yet durable aircraft-grade aluminum alloy and weighs only 24.4g, while the ocean-like curved glass screen assimilates into the bezel-less design, for total immersion into your display. Navigate the smartwatch deftly with the elegant rotatable crown, and with an ultra HD AMOLED display that has 341 PPI, and is even visible under bright sunlight.. EXPERIENCE OPTIMIZED OPERATION WITH ZEPP OSEasily find what youre looking for among the Amazfit GTS 3 smart watchs applications thanks to the intuitive Zepp OS. With most animations reaching 60 FPS, along with a specifically tailored UI, the Zepp OS makes navigating to the feature you need a seamless interaction that consumes less power. Experience a mini app framework with a rich ecosystem including 10 plus mini apps and even the Home Connect third-party app..

Position with PrecisionAmazfit GTS 4 Mini smart watch supports 5 satellite positioning systems to help you make the most of your journeys into the great outdoors, and uses circularly-polarized antenna technology to improve positioning performance and accuracy..Water resistance depth50 meters.Supported ApplicationGPS,Voice Control,Multisport Tracker,Heart Rate Monitor,Sleep Monitor. Connectivity technologyBluetooth. Wireless comm standardBluetooth. Alexa Built-in Powerful Zepp OSEasily set an alarm, ask a question, get a translation and more, with the Amazon Alexa feature of the watch. Packed with smooth low power-consuming Zepp OS, which features over 10 mini apps, including the Home Connect third-party app, to help enhance your daily life.. Health Made EffortlessEasily test your heart rate, blood-oxygen saturation and stress level simultaneously with a single tap of the smartwatch, for a result in as quick as 45 seconds. Also, this watch provides in-depth monitoring of sleep quality to keep you on top of your health.. 120 plus Sports Modes Smart RecognitionWalking, running, cycling, yoga, and more. Whichever activity makes you challenge yourself, you'll likely find a sports mode for it on the fitness tracker watch. And Jump into action quickly with smart recognition of 7 Sports.. Swim with ConfidenceA water-resistance grade of 5 ATM means the smart watch can resist the equivalent of up to 50 meters' water pressure. And whenever you fancy a trip to the pool or the beach, the watch's Pool Swimming and Open Water Swimming sports modes can scientifically track your swimming data.. Long-lasting EnduranceThis ultra-compact smartwatch packs a mega-powerful 270 mAh battery, bringing 15 days of endurance on typical usage and up to 45 days of battery life on battery saver mode..

AMAZON ALEXA BUILT-IN Talk to Amazon Alexa on your Zepp Z . Ask questions, get translations, set alarms, and timers, create shopping lists, check the weather, control your smart home devices, and more.. SOPHISTICATED TITANIUM ALLOY CRAFTING The Zepp Z case is a single piece of polished titanium alloy, making it both lightweight and strong enough for advanced uses like aviation, and also features a special nanotech-coated touchscreen for enhanced resistance to scratches and fingerprints.. OVER TWO WEEKS OF BATTERY LIFE Combining a customized large capacity battery and a highly-optimized power management system, the Zepp Z delivers a battery life of up to 15 days in daily use mode and a battery life of over 30 days in long battery life mode.. A DISPLAY THAT NEVER RESTS The AMOLED display is always-on, waking up every time you raise your wrist, with a 326 ppi display vividly reproducing a 100 NTSC wide color spectrum, resulting in an extraordinary level of detail.. HEART RATE STRESS LEVEL MONITORING The Zepp Z can provide all-day heart rate monitoring and elevated heart-rate warnings, and also monitors your stress levels to help you understand when you need to relax.. SLEEP QUALITY SpO2 LEVEL MEASUREMENT Blood-oxygen saturation level is an important physiological indicator, and so the Zepp Z can track and monitor your blood-oxygen level, as well as accurately monitoring your deep, light, and REM8 sleep stages, awake time, and afternoon naps to help you improve sleep quality.. VOICE ASSISTANTS The Zepp Z, after connecting to your mobile phone, uses Alexa Support by OTA upgrade to help you control your smart home appliances, set alarms and timers, check the weather, and more, and is also equipped with an offline intelligent voice assistant which supports 58 voice commands.. Compatible phone models Android 5.0 and Above.

Only compatible with Amazfit GTR 4 2022 smartwatch.NOTENot for other models, please check the watch model before buying.. The case covers the screen and edges, providing all-around protection.. Made of flexible TPU electroplating materials,Slim and sensitive, does not add extra weight.. Precise hole locations allow easy access to all controls and sensors for easy installation and removal.. We will provide you with the best quality and the best service, if you have any questions about this product, please contact us - wugongyan store..

Ready for Action The Amazfit T Rex 2 premium GPS smart watch is equipped with 1.39 HD AMOLED always-on display for clear outstanding visibility while outdoors and it passed 15 Military-standard Tests MIL-STD-810G to withstand extreme temperatures and environments, and prove durability even when subjected to intense physical condition..Water resistance depth100 meters.Suported ApplicationGPS,Pedometer,Fitness Tracker,Distance Tracking. Connectivity technologyBluetooth.. Navigate for Your ExplorationGo beyond adventure with the watch's dual-band positioning and suport for 6 satellite positioning systems, which can effectively reduce environmental interference and achieve more precise positioning. Hikers, climbers, and explorers of any fashion can also conquer new heights and discover new paths with the T-Rex 2's built-in compass and barometric altimeter.. Conquer the UnchartedTread new ground by importing route files from the Zepp App. Your movement along an imported route, and even your unique movement along your own developing route, can be displayed in real-time directly on the watch. Also, the smartwatch can show you the shortest straight line back to the start of your journey, so you can avoid twists and turns when you're in a hurry.. 150plus Sports Modes 10 ATM Water Resistant The Amazfit T-Rex 2 sports watchs huge selection of over 150 sports modes includes the toughness-testing Triathlon mode, the professional lap-data recording Track Run mode with smart trajectory correction, and the more leisurely Golf Swing mode. And it is 10 ATM water resistant and can withstand splashes, rain or snow, swimming, snorkeling, and other non-high-speed water sports.. The Power to Endure Any AdventureWith a battery powerful enough to endure adventures upto 24 days with typical usage and 45 days on Battery Saver Mode, the Amazfit T-Rex 2 is brimming with the energy you need to go on the hunt for adventure.. One Tap for Four Health Metrics With the Amazfit T Rex 2 smart fitness watch you can test your heart rate, blood-oxygen saturation, stress level and breathing rate in a single tap of the watch, for a result in as little as 45 seconds. To easily understand your condition without cycling through individual apps, quickly get the data you need in one tap and then get on with your day..