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 plus 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%. Lifestyle: This is one smart watch with always-On Display with thousands of watch faces to personalize your look and always see the time. Hundreds of apps from assistant to fitness, payments, music, social, news, games, stopwatches and more. With a swimproof design, it’s perfect for all your activities. Health and fitness: Automatically tracks activity goals, steps, sleep, heart rate, cardio level and more. Activity modes with tethered GPS keep you on track with your distance and path. Advanced sensors provide the data to power all your health and fitness apps. New wellness enhancements allow you to track sleep history, monitor your restfulness and set sleep goals Stay connected with notifications for calls, texts, apps and automatic time, time zone and calendar syncing. Never miss a call - answer and make calls directly on your watch when your phone is out of reach. Battery life is based on usage and after updates install. Supported features may vary between platforms and countries with compatibility subject to change. Not compatible with Android Go edition or phones without Google Play Store.