Technical Details OS Android/iOS Product Dimensions 4.28 x 3.56 x 0.98 cm; 39 Grams Batteries 1 Lithium Polymer batteries required. (included) Item model number Amazfit GTS 2e Green Connectivity technologies Bluetooth GPS GPS Special features android, iOS Other display features Wireless Device interface - primary Touchscreen Color Green Whats in the box User Manual, Smartwatch, charger, user guide, Magnetic Charging Base Item Weight 39 g Brand Amazfit Model name GTS 2e Green Style Classic Colour Green Screen size 1.65 Inches About this item A Work of Art on Your Wrist: Amazfit GTS 2e includes a 1.65-inch AMOLED HD screen and its watch face store provides 50+ styles, along with 40+ matching Always-on Displays, and you can also upload your own pictures to the watch face background. All-round Health Tracking: Amazfit GTS 2e smart watch can provide 24-hour heart rate monitoring, SpO2 measurement, and sleep quality and stress level monitoring. Also included is the PAI health sment system to convert complex health and activity data into a single score, to help you understand your physical state. 90 Sports Modes & 5 ATM Waterproof: Activate one of the sports modes and the sports watch will produce a corresponding analytical report in the mobile app after you finish to help you improve your exercise plan. Intelligent recognition of sports modes eliminates the need to manually select the sports mode, and 5 ATM water-resistance means you can wear it while you swim. Alexa Built-in and More Handy Functions: To set alarms, check the weather, control your smart home devices, ask questions and more, just raise your wrist and tell Alexa what you need. The Amazfit GTS 2e smart watch now has an offline voice control feature, enabling you to perform voice operations on your watch without internet access. It also have everyday functions like Do Not Disturb, stopwatch, notifications, alarms, weather forecast information etc. Lightweight & Extended Battery Life: Featuring a thinner body, and a high-capacity battery, GTS 2e smart watch features an extended battery life which covers you for up to 14 days, wherever your exercise takes you.