This BB4x5 employs a 750 lumens single chip LED, featuring double o-ring for improved reliability and comes with the 8 x AA and C Alkaline or Ni-MH Batteries Adapters in a package, the extended burn time is up to an amazing 40 hours. It is operated by a Magnetic Rotary Switch with 2 levels of output, at 70% and 100%, which further prolongs the burn time. The Switch is equipped with a Locking Mechanism to prevent light from accidentally turning on when not in use. The Lights Case is made from Durable Corrosion Proof Polycarbonate material which is Depth Rated to 330' (100 meters). The Lights Lens is Tempered Optical Glass and the Beam Angle is 40-. Light has a Color Temperature of 6500K. The Big Blue BB4x5 750 LED Light weighs 34.7 oz (984 g) with AA Batteries and 47.44 oz (1345 g) with C Cell Batteries. The Lights is Negatively Buoyant 1.09 oz (31 g) with AA Batteries and 13.8 oz (392 g) with C Cells. The Light measures 3.11 x 8.54 (79 x 217 mm). Light comes with a Pistol Grip and Lantern Handles, Wrist Lanyard