The combination of a Maxbright Rebel LED and a Princeton Tec-designed collimator maximizes the beam by balancing long-throw with localized lighting. The 3 AAA battery footprint of the EOS is a self contained battery system that eliminates external wires. Equipped with (3) brightness levels and a blinking emergency/signaling mode. Includes handlebar and helmet mounts plus a headband for use as a headlamp. Wt: 3.7 oz. w/batteries.