YiRong Waterproof Smart Bluetooth Wrist Watch Call Message Reminder/Sleep Monitor /Dringking/Sedentary Remind/Anti-lost/Stopwatch/Calendor/Calculator/Pedometor U8 This equipment is mainly used to connect with smart machines to play certain functions. The devices have the following features: surpport for phone calls, bluetooth message push(SMS, WeChat, QQ etc. Attention: these functions can be only used in Adroid system and the smart phone should install the BT Notification APK, not suitable for iPhone), bluetooth music play, calories, pedometer, sleep monitor, anti-lost, remote camera and so on. Pedometer can use to calculate the steps, distance, speed, time and so on to estimate the calories you have burned, and thus control the amount of exercise, to help you establish a healthy sports way. The Pedometer will automatically clear every day, but the steps will continuously accumulate within a day. (Attention: to avoid false account, the initial steps will not show up immediately, but it will be counted when the steps is steady.) Remote camera control, it is really convenient for taking photos. Anti-lost function: When you are far way from your celphone, the watch will alarm ring, better protect your celphone. This type of product is different on whether include altitude (Please be attention: WH: with Altitude. WHO: no Altitude). The wrist watch with Altitude include more functions: Barometer and Altimeter, while the one with no Altitude does not include these functions. The package is included:1 x wrist watch, 1 x USB cable, 1 x English user manual. Product dimension(mm): 50*40*10(just the screen). Package dimension(mm): 120*84*65. Net Weight: 43g. Shipping weight: 140g.