The xenon/LED combination of the Twin-Task offer versatile, long-running, go-anywhere performance by choosing between a super-bright beam or incredibly long run time. The 100,000-hour LEDs provide a run time surpassing conventional high-powered bulbs. Xenon bulbs provide intense bright light. Computer-machined anodized-aluminum construction and a matte black anodized finish. Unbreakable polycarbonate lense and is IPX4 rated for water-resistant operation with O-ring-sealed openings. 1 meter impact resistance tested. Runs on two 3-volt lithium battery. Lifetime warranty. Output: 120 lumens to 100 meters for 4 hours (C4); 31 lumens to 39 meters for 15 hours (5mm LEDs). Dimensions: 5.43"L x 1.33"W x .98"D. Weight: 5.44 oz.