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. Features C4® LED technology for extreme brightness with a 50,000-hour lifetime and ultrabright white LEDs with a 100,000-hour lifetime. 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. Wrist lanyard. Three lighting modes. Runs on three C alkaline batteries (not included). Output: 180 lumens to 120 meters for 26 hours (C4 LED); 80 lumens to 62 meters for 48 hours (6 LEDs); 50 lumens to 50 meters for 72 hours (3 LEDs). Dimensions: 9.02"L x 1.68"W x 1.26"D. Weight: 16 oz.