Color Black + Silver Brand LetterFire Model N/A Quantity 1 Piece Material Aluminium alloy Emitter Brand Cree LED Type XM-L Emitter BIN T6 Number of Emitters 1 Color BIN White Working Voltage 4.2~12 V Power Supply USB power supply (support external mobile power) Current 1800 mA Theoretical Lumens 900 lumens Actual Lumens 600 lumens Runtime 2~3 Hour Number of Modes 3 Mode Arrangement HiMidSlow Strobe Mode Memory No Switch Type Reverse clicky Lens Glass Reflector Aluminum Smooth Flashlight Mounting Handlebar and Helmet Switch Location Tailcap Beam Range 100 m Other Features Power supply: Can be also use 4 x 18650 8.4V 2 in series and 2 in parallel 3500mAh battery (not included) Packing List 1 x Lamp (cable length: 110cm)