Use the WearOS by Google app on your phone running the latest version of Android (excluding Go edition) or iOS . Supported features may vary between platforms and countries with compatibility subject to change.
Battery: 24 Hr + multi-day Extended Battery Mode **Varies based on usage and after updates install**. USB cable with magnetic charger snaps to rings on watch caseback and spins 360 degrees for ease of use. 50 minutes to reach 80%.
This is one smart watch with always-on display and thousands of watch faces to personalize. Hundreds of apps from assistant to fitness, payments, music, social, news, games, stopwatches and more. The swimproof design is perfect for all your activities.

Xiaomi Mi Band 5, Bigger Dynamic Color Screen: The Screen Of Mi Band 5 Is Increased By 20%, 1.1″ Amoled Screen . 100+ Watchfaces
More Convenient Magnetic Charging: The Charging Interface Has Been Changed To The Below Of Heart Rate Sensor, And Two Contact Points Design, Just Charge At A Touch, No More Frequent Disassembling The Mi Dial
Upgraded Professional Sensor: An Upgraded Version Of The Chip, More Accurate Health Monitoring

Imported
Slim, smart activity tracker blends fashionable design with stylish metal accents and a bright, easy to read display
Includes advanced sleep monitoring with REM sleep and can gauge blood oxygen saturation levels during the night with the wrist based Pulse Ox sensor. (Not a medical device and not intended for use in the diagnosis or monitoring of any medical condition)

Premium GPS running/triathlon watch with wrist based heart rate; Strap material: Silicone; Smartphone compatibility: iPhone, Android, Windows
Offers advanced running and multisport Features in a comfortable watch you can wear all day, and it only weighs 49 grams
Provides elevation changes with a built in barometer; altimeter and electronic compass help you keep your bearings

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1.59in l x 1.59in w x 0.49in h. You can also get call, text and app notifications, use amazon Alexa built-in and control Spotify, freezer and Pandora when your phone is nearby.
Compatibility: Apple iOS 12.2 or higher, Android OS 7.0 or higher, Syncing range: Up to 30ft, Music control via Bluetooth Classic on Android and Bluetooth LE on iOS devices.

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Meet Fitbit Versa 2, a smartwatch that elevates every moment. Use your voice to create alarms, bedtime reminders or check the weather with Amazon Alexa. Take your look from the gym to the office with its modern and versatile design.
Use Amazon Alexa built-in to get quick news updates and information, check the weather, set timers and alarms, control your smart home devices and more all through the sound of your voice. Optimal Operating Temperature is -10° to 60° C.

AMAZON ALEXA BUILT-IN & BLUETOOTH PHONE CALLS: Talk to Amazon Alexa on your Amazfit GTS 2. Ask questions, get translations, check the weather, control your smart home devices, and more. Also, you can answer calls on your smart watch via the built-in microphone and speaker upon the connection to your phone via Bluetooth.
LONG 7-DAY BATTERY LIFE & GPS BUILT-IN: The GTS 2 smart watch is equipped with a powerful 246mah battery that can last 7 days with typical use, and is always ready to escort you on your journeys and track your progress. And get precise tracking of your daily steps, distance traveled, and calories burned thanks to integrated GPS.
90 SPORTS MODES & 5 ATM WATER RESISTANT: Amazfit GTS 2 features 90 built-in sports modes and is waterproof to a depth of up to 50 meters. Intelligent recognition of 6 sports modes also eliminates the need to manually select the sports modes, so the fitness sports watch is always ready for action.

Track all day activity, including steps, distance, hourly activity, active minutes and calories burned
Automatically track your sleep & set silent alarms that wake you by buzzing on your wrist.Operating temperature: -10° to 45° C
Enjoy up to 5 days of battery for daily progress without constant charging. Varies with use & other factors

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Smartwatch for your athletic lifestyle, featuring 1.3” always-on, bright AMOLED display; select models feature a sapphire display and titanium bezel
Smartwatch mode battery life: up to 16 days (gesture)/up to 5 days (always-on)

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FITNESS, HEART RATE & SLEEP TRACKER: The Amazfit GTS fitness smartwatch precise optical heart rate monitoring allows you to accurately track real-time steps taken, all-day heart rate monitoring, distance traveled, calories burned, quality of sleep and sleeping patterns
1.65″ AMOLED ALWAYS-ON DISPLAY: Amazfit GTS has a customized 1.65-inch AMOLED always-on stylish square screen which offers a larger display area than a round watch face of the same width, so it can carry more information