Smartwatch with Hard PC Case, Enamel Bezel, size 45 mm TPU strap, available in 7 colors. 3 ATM Waterproof CPU: Nordic NRF52840 DISPLAY: 1.28” TFT-LCD display, Full Touch, Resolution 240*240 Sensor: Accelerometer+ Gyroscope, Heart Rate, Light Sensor 2.5D High Hardness Glass Battery Capacity 300 mAh; Charging Voltage +- 0.2V Working Time: 7 Days, 1 Day with GPS always working Standby Time: 45 Days