Color Black Brand UitraFire Model LU-4 Quantity 1 Piece Material Aluminum alloy Emitter Brand Cree LED Type XM-L Emitter BIN T6 Color BIN Cool White Number of Emitters 1 Theoretical Lumens 600 lumens Actual Lumens 600 lumens Power Supply 1 x 18650 (not included) Working Voltage 3.6-4.2 V Current 1600 mA Runtime 1.5-2 Hour Number of Modes 5 Mode Arrangement HiMidLowFast StrobeSOS Mode Memory No Switch Type Reverse clicky Switch Location Tail Twisty Lens Material Glass Reflector OthersPlastic Working Depth Underwater 50 m Strap/Clip Strap included Other Features Rotary switch rotate to change mode; 5 modes: Hi Mid Low Fast strobe SOS; 50m waterproof. Packing List 1 x Diving flashlight 2 x Rubber rings 1 x Strap