Display Screen: 1.43" AMOLED BT Version: V5.3 Material: ABS/PC/Zinc alloy Battery Capacity: 300mAh Battery Type: Lithium polymer Rated Voltage: 5V Charging Time: 2.5 hours Normal Usage Time: 11 days Standby Time: More than 32 days Watch Size: 46.5*11.4mm Weight: 63.97g (with strap) Waterproof: IP68 *oraimo Lab test results.