Happyi LED Submarine Light Diving Flashlight Underwater Torch Waterproof CREE Q5 Lamp (Yellow) 1.Power by:4 x AA batteries (not included). Equipped with a handstrap, very convenient to carry 2.nternal wiring high efficient booster circuit can use the batteries to the largest extent. 3.Hard anodized finish Ultra-deep trench structure with skid-proof effect is excellent when diving. 4.This torch uses a CREE XM-L Q5 LED producing very bright Output bright can come to above 400 lumens. 5.Battery: 4 * AA battery (Not Included)