Fenix turns any night ride into a manageable adventure with handlebar or helmet mounted illumination. The BT Series uses readily-available cells and common recharging technology to stay strong in the longest nights. With a full range of brightness levels and flashing functions, the BT10 and BT20 are the first deployments of Fenix DUAL DISTANCE BEAM SYSTEM. This unique technology delivers close-in visibility and long-reach spot lighting to stay ahead of obstacles. A tradition of power management and easy controls makes the BT Series an easy, confident buy for occasional and hard-core riders alike.