Smartwatches with Wear OS by Google are compatible with phones running the latest version of Android or iOS. The newest Qualcomm 4100+ chipset brings a 30% enhanced performance. Improved power, more reliable connection and up to 4x range with Bluetooth 5. Automatically tracks activity goals, steps, sleep, heart rate, cardio, and SpO2 (blood oxygen). Activity modes with GPS keep you on track with your distance and path. Advanced sensors provide the data to power all your health and fitness tracker apps. Always-On display now brighter with more colors and higher pixel count. Thousands of watch faces to personalize your look and always see the time. Hundreds of apps from assistant to fitness, contactless payments, music, social, news, stop watches and more. Stay connected with notifications for calls, texts, apps. Automatic time zone and calendar syncing. Answer and make calls directly on your watch when your phone is out of reach. This smart watch features a speaker, microphone, and customizable buttons. Our new caseback and included magnetic charger allow for faster charging than other generations. Charge up to 80% in 30 minutes. Optimize your battery life with simplified Smart Battery Modes. Swimproof 3 ATM design is perfect for all your activities. Android users can get a little extra help with Alexa built-in. Easily access the Amazon Alexa app to get quick news and information, check the weather, set timers and alarms, control smart home devices, and more - all through the sound of your voice. Battery life is based on usage and after updates install. Supported features may vary between smartphone platforms and countries with compatibility subject to change. Not compatible with Android Go edition or phones without Google Play Store.