Display Screen: 2.04 TFT; BT Version: V5.3; Material: ABS/PC/Zine allay Battery Capacity: 300mAh; Battery Type: Lithium polymer; Rated Voltge: 5v Charging Time: 3 hou's: Normal Usage Time: 8 days, StandoyTime: More than 33 days; Watch Size: 48.9*41*11.2mm (without strap); Weight: 57.2g (witth strap Waterproof: IP68 *oraimo Lab test results