http://www.lightmobile.com/cpdz_show.aspx?id=413 <br />The flashlight uses imported high brightness LED light source, aviation aluminum alloy shell and high-performance lithium-ion batteries. It has a hidden type sealing ring, enabling it waterproof, compression resistant and shock proof. Convenient charging, no memory effect. The switch in the middle of the flashlight, controlling the flashlight in a sequential cycle: low light, working light, strong light, flash and off. <br />Main parameters <br />Power:≥10W <br />Working time of strong light:≥600min <br />Working mode in sequential cycle: low light, working light, strong light, flash and off. <br />Charging current: 500mA <br />Battery capacity: 4,800 mAh <br />Dimension: head:≤φ50 mm, cylinder body:≤φ28mm, total length:≤242mm <br />Weight: ≤0.42kg