Underwater Kinetics Aqualite Max 3000 lumensAs a primary, this super bright dive light cant be beaten. It puts out a narrow penetrating beam for the night, wrecks and caves. Pushing the large rear switch button selects 3 levels of brightness as well as emergency flash mode. As a photographer, you can slip in the diffusion filter for smooth wide angle illumination. Two extra large lithium batteries are removed for charging and can be replaced with an extra set for all day diving without