Beuchat Led 3. LED 3 Watts Bulb watertight to 70 meters 3 W Luxeon LED Light intensity equivalent to a lumens rating of 150 10 W halogen bulb Color temperature 5500° Concentration of the light beam 150 mm at 1.2 meters Power supply 4 AA alkaline batteries or NIMH AA or AA batteries Battery life 6 hours at 100% and 10 hours at 50% Magnetic switch Button switch on off control Safety catch Aluminum anodized head to ensure cooling of the LED and double watertight seal with the body. Dimensions 167 mm X 43 mmBenefits Minimal bulk can be stored in a BC pocket or used on a free dive Light intensity equivalent to a 10 W halogen long lasting LED lasts approximately 100000 hours Concentration of the light beam