Screen Size: 1.85" AMOLED 390*450BT Version: V5.2 Battery Capacity: 300mAh Battery Type: Lithium Polymer Battery Charging Time: 2 hours Standby Time: Up to 28 days Usage Time: Up to 14 days Watch Size: 45.16*41.15*12.08mm (without strap) Weight: 42.2g (with strap) Material: ABS/PC/Aluminum Alloy *oraimo Lab test results