The Tauri Headtorch provides impressive 280-lumen performance in a waterproof housing, making it ideal for alpine use & fast-moving endurance sports. It is equipped with a high-power LED with four brightness levels for focused distance lighting & SOS strobe mode. The rechargeable lithium polymer battery can be charged in three hours via the micro USB (Universal Serial Bus) cable supplied & a battery indicator shows how much battery power remains. An adjustable diffuser lets you change from focused to wide beam.