CAT EYE Bicycle Headlight AMPP500 Black Up to approximately 500 lumens USB rechargeable Compact yet sturdy and powerful Adopts side lenses for

Size: 33×38×105mm Weight: 120g Battery used: Lithium ion rechargeable battery (3.6v 2200mAh) Usage time High: Approximately 1.5 hours (500 lumens) Low: Approximately 3 hours (250 lumens) Daytime hyper constant: Approximately 5 hours (500/250 lumens) Flashing: Approximately 50 hours (250 lumens) Charging time: about 4 hours (1A) - about 8 hours (0.5A)