Features: GPS, Snore Detection, Calorie Tracker, Sleep Monitor, Notifications Connectivity Technology: Bluetooth Wireless Communication Standard: Bluetooth Battery Type: Lithium GPS: Built-in GPS Shape: Rectangular 【High-Definition Display】1.82-inch ultra-thin AMOLED display, maximum brightness of 1500 nits, vivid display with 347 PPI, ultra-narrow bezel, screen-to-body ratio of approximately 77.4%, 60Hz refresh rate, and automatic brightness adjustment. 【Slim Design】Aluminum alloy body and smooth metal buckle create a cool impression. 5 ATM water resistance. 【Industry-Leading Calorie Management Function】The unique new Body Maker app, combined with the HUAWEI Health app, allows you to see your calorie intake, calorie expenditure, and calorie deficit at a glance on your watch. 【High-Precision Sleep Measurement】Sleep detail data in the HUAWEI Health app includes data such as heart rate, blood oxygen levels, and respiration rate during sleep. This allows users to understand their sleep data at a glance. It is possible to monitor the quality of your sleep and aim for better sleep. By using the sleep breathing disturbance detection function, you can monitor your breathing during sleep and help detect respiratory problems. 【Powerful Battery】&【Compatible with iOS and Android】The battery typically lasts for about 10 days, so you don't have to worry about the battery level frequently. Approximately 10 days of normal use, approximately 7 days of heavy use. Data can also be synchronized with Apple Health. Both the iOS app and the Android app basically have the same functions.