For the best balance of performance and energy efficiency, choose the Pelican? top-of-the-line LED design. Long-lasting, low-power-drain LED bulb provides up to 10,000 hours of burn time. Deep-dish, collimator reflector increases bulb's peak intensity by 250%, ensuring excellent long-distance spotting. Rugged, lightweight ABS resin case with umbrella valve stands up to rough conditions. Polarity-guard tray prevents cell-reversal, eliminating the potential for dangerous outgassing. Watertight, IPX7-rated tube may be safely submersed to depths of up to one meter. Battery Type: Alkaline; Flashlights Type: LED; Power Source(s): 3 C (sold separately); Voltage: 4.5 V.