Trands SW140 - 1.27 Inches 360*360

CPU: JL 7013A6 Plug In Flash: 128MB Heart Rate Chip: HRS3605 Accelerometer: DA267-LGA12 Bluetooth Version: BLE 5.0 Display: 1.27 Inches, ST77916 Resolution: 360*360 Touch Type: Full Screen Touch Battery: 300mAh Polymer Charging Mode: USB Magnetic Charge Built-in Dials: 7 dials, supports customized and downloaded dials Strap: 16mm Silicone Strap (Detachable and Replaceable) Product Weight: 41g Waterproof Level: IP67 Charging Voltage: DC 5V System Requirements: Android 5.0, IOS 8.2 or above, Supports Bluetooth 5.0 BLE