Measures 7.3" x 7.1" x 3.2". Safety yellow polycarbonate construction with black pistol grip handle. Front lens protected by heavy rubber boot for drop protection. Non-breakable locking switch prevents accidental actuation. High mode: 825 lumen output with 9 hour runtime and 520 ft. beam distance. Low mode: 530 lumen output with 14 hour runtime and 431 ft. beam distance. Full and half-power switch can extend battery life even more. Depth rating: 500 ft. A pair of water cooled high intensity LEDs deliver over 10 watts of power. High color temperature gives the beam the same color as sunlight. Brightness remains even higher underwater than in air with UK's unique LED water cooling design. Rubber sleeve lanyard included. Weight 36 oz. Uses 8C cell alkaline batteries (not included).