Manufacturers Directly Sell V1 Smart Bracelet 5 Colors Touch Screen, Heart Rate Blood Pressure Monitor Waterproof Sports Watch Model V1 System IOS 8.0 & above / Android 4.4 & above Functions Blood pressure monitor, Heart Rate Monitor, Sleep Monitor, Pedometer, Message Reminder, Call Reminder, Distance, Calorie Burned,  Alarm Alert, Touch Button,countdown,remote photography,sedentary reminder, stopwatch CPU Chip Nordic n52832 Sensor 3D Sensor PPG Sensor Everlight Vibration Yes Waterproof IP67 Display Size & Type 0.96 TFT Full Color Display Bluetooth Version BLE4.0 Sync Outlook & Material Host: PC       Strap: TPU Product Size 250*22*11.5MM Weight 25g Strap Color Black, Red, Blue Battery Li Battery Capacity 130 mAh Standby Time 15days Charging USB Charge Charge Time 2.0 hours APP Name HBand Package Content 1pc V1,, 1pc user manual, 1pc packing box