This is the BigBlue AL450W 450 Lumen 40 degree Beam Scuba Diving LED Light Features: Light Source: Cree LED Light Output: 450 Lumens Casing Material: Aluminum alloy, anti-corrosive anodized Power Source: 3AAA batteries, alkaline or NiMH Angle Of Light Beam: 40 degrees Safety Designs: Double o-ring sealed Color Temperature: 6500K Available Colors: Black Burn Time: Up to 4 hours at full lumen output Maximum Depth: 100 M tested Weight: 164g (including batteries) Bouyancy: -80g (including batteries) Switching System: twist bezel Front Glass: Tempered optical glass Lanyard: Yes Upgraded for 2015 to 450 lumens! This light is a rugged, reliable, and compact light with a powerful output. The AL450W offers 450 lumens, a 40 degree beam angle, a twisting bezel for on/off function, and a lanyard. This is a great small light option for any diver.