Police Flashlight Technical Specifications: Material: aviation high-quality aluminum alloy Surface: precise process of CNC, disposal of thick anode oxidation Size:length:135mm,diameter of head:35mm Bulb lifetime: 100thousand Hours Weight: 175G(without batteries) Brightness: 100 lumen Illumination time:4 hours(highlight) Lens material: imported material Batteries: rechargeable high capacity lithium ion batteries.