This is the ScubaPro Compact Nova 250 Scuba Diving Light Aluminum Body Features: Measurements: 3.9x1.0in /100x26mm. Weight (w/battery): 2.5oz /70g. Rugged aluminum body features a rugged matte black finish with blue accents, providing lightweight long-term durability and a high-quality look. Equipped with a Cree XPG LED. 250 or 300 lumen illumination (rechargeable or disposable); 2700 lux @1m; CCT (correlated color temperature): 4500degK. Beam angle: 12deg. Three modes: 100% power, 50% power and Flash. New push-button switch on the end of the light is easy to activate when wearing gloves. Double O-ring seals ensure watertight integrity. Extended light head shroud prevents the light beam from blinding other divers. Over-pressure valve releases battery off-gassing - a safety feature not normally found on dive lights of this size. Specs: Type - Primary Lumens - 250.00 Burn Time - Up to 1hr @ Full Power Lamp Type - LED Depth Rating - 490ft Depth Rating M - 150m Materials - Metal Battery Type - Rechargeable Weight - 0.0697 lb | 0.0316 kg Activity - Recreational The new Nova 250 is a versatile dive light that can be stored in the smallest BCD pocket. It offers three modes: 100% power, 50% power and Flash, plus is equipped with an over-pressure valve to release battery off-gassing, making it the safest small light on the market. Delivering 250 lumens of illumination, the Nova 250 is powered by a CR123 battery (rechargeable or disposable). The CR123 disposable battery features a shelf life of up to 10 years so you don&&';;t have to worry about it if it stays in your BCD pocket over the winter.