Model: OSW-803N Display Screen: 1.83'' TFT 240*284 BT Version: V5.2 Material: ABS/PC/Silica gel Battery Type: lithium polymer Battery Capacity: 300mAh Charging Time: 3 hours Normal Using Time: 7 days Standby Time: 30 days Watch Size: 52.46*38.8*11.8mm (without strap) Weight: 40.5g (with strap) Waterproof: IP68 *oraimo Lab test results