1、Long battery life, USB charging design, the wrist strap can be removed, you can directly charge on any computer and USB charger, no adapter and charging cable required. 2、No mobile phone required, intelligently calculate walking steps, distance and calories, so that the daily step data is more accurate. 3、With IP67 waterproof performance, wash hands, rain, water environment available. 4、Built-in chip sensor, low power consumption, high precision. Reminder for detecting heart rate and blood pressure during exercise, let you make plans freely for exercise according to body conditions. 5、Heart rate changes can be read by built-in motion and heart rate sensors. Reminder for monitoring heart rate during exercise allow you to freely plan your exercise based on your heart rate. Features: 1. Long battery life, USB charging design, the wrist strap can be removed, you can directly charge on any computer and USB charger, no adapter and charging cable required. 2. No mobile phone required, intelligently calculate walking steps, distance and calories, so that the daily step data is more accurate. 3. With IP67 waterproof performance, wash hands, rain, water environment available. 4. Built-in chip sensor, low power consumption, high precision. Reminder for detecting heart rate and blood pressure during exercise, let you make plans freely for exercise  according to body conditions. 5. Heart rate changes can be read by built-in motion and heart rate sensors. Reminder for monitoring heart rate during exercise allow you to freely plan your exercise based on your heart rate. 6. The built-in motion sensor can read blood pressure changes, always pay attention to the health index, blood pressure measurement allows you to pay attention to your body's blood pressure status. 7. Smart reminder, no longer miss important calls. Wrist vibration perception, even if the phone is in the bag or silent mode, you will not miss important calls. Specifications: Model: 115P Item size: Approx. 43*18*10mm/1.69*0.71*0.39in Belt size: Approx. 245*20*12.8mm/9.65*0.79*0.5in Strap material: TPU Color: Black, Blue, Purple Optional Display: 0.96in LED Motor: Built-in vibration reminder function Heart rate: can monitor static, dynamic Battery: 90mAh Charging time: about 1-2 hours (USB direct charging, no charging cable is required. Please take the following table and then charge directly with USB) Standby: work about 5-7 days Wireless distance: 5m~10m Compatibility: For Android 4.4 and above, for iOS 7.0 and above, for Bluetooth 4.0 Data sync: for Bluetooth data sync to mobile apps Data storage: 7 days of motion data can be saved APP compatible languages: Chinese, English, Japanese, Turkish, Spanish, German, Russian, Finnish, Arabic, French, Malay, Indonesian, Korean, Portuguese Language supported by news content: Chinese, English Method of operation: touch button Waterproof: IP67 (supports daily life waterproof / rain / hand washing, does not recommend hot water bath / hot water / diving / underwater swimming) Package List: 1 * Smart Bracelet 1 * User Manual