The EOS is optimal for both localized needs and spotting at a distance. The combination of a Luxeon/1 watt L.E.D. optimized lens/collimator maximizes the beam by balancing long throw with flood light. The self contained battery system eliminates extrnal wires. The EOS features(3) brightness levels and a blinking emergency/signaling mode. Batteries: 3 AAA. Bulb life: 10,000+ hours. Weight: 3.7 oz. with batteries. Waterproof to 1 meter. Burn time: 6.5 hrs (high), 12.5 hrs ( med), 60 hrs (low). eqprt081