This is the BigBlue CF450 Adjustable Focusable LED Scuba Diving Light Features: Light Source:Cree LED Light Output:450 Lumens Casing Material:Aluminum alloy, anti-corrosive anodized Power Source:3 AAA batteries Safety Designs:Double o-ring sealed, safety valve Angle Of Light Beam:6 degrees to 31 degrees adjustable Color Temperature:6500K Available Colors:black, blue, silver Burn Time:Up to 4 hours at full lumen output Maximum Depth:100 M tested Grip:Handheld with lanyard Size:D 40mm x L 120mm Weight:193g in air (including batteries) Bouyancy:In seawater -91g (including batteries) Switching System:Magnetic switch Front Glass:Tempered optical glass Lanyard:Included Upgraded from 250 lumens to 450 lumens for 2015! The most popular Bigblue light is now even better! The CF450 offers a long list of features that makes it the only light you'll want to carry: *Focusable beam angle from 31 degrees to a narrow 6 degrees by twisting the front bezel. *Magnetic on/off swivel switch offers one-hand operation while providing reliable and safe switching. *Stand-alone 3AAA battery holder (use Alkaline or NiMH batteries only - not included). *Durable anti-corrosive aluminum alloy construction. *Double o-ring seal. *Adjustable lanyard included in all package styles. *Light is offered in three great colors: Black, Blue, Silver.