Product OverviewThe new Fenix BT10 is one of two new dedicated bike lights from Fenix.The BT10 is powered by four AA batteries, which are housed in a detachable battery magazine. Three power levels plus strobe setting:Dual distance beam system provides a broad flood beam at close range, and a long throw distance beam of up to 140 meters. The BT10 includes mountings for use as a handlebar or helmet light when used with the supplied extension cable. Other features include an intelligent power indicator allowing the user to see how much battery power is remaining whist riding and an IPX6 water resistant rating for use in all weathers.