Big Blue CF250M Mini Adjustable Focusable LED Scuba Diving Light with Hand Mount (Blue) Big Blue CF250M Mini Adjustable Focusable LED Hand Mounted Scuba Diving Light Light Source Cree, LED Light Output 250lum, Casing Material Aluminum alloy, anti-corrosive anodized Burn Time up to 4 hours at full lumen output Maximum Depth 100M tested Power Source 3AAA batteries, Angle Of Light Beam 6 degrees to 31 degrees adjustable, Safety Designs Double o-ring sealed House of Scuba is an authorized Big Blue dealer