Color Black Model K12 Quantity 1 Piece Material Aluminium alloy + plastic Emitter Brand Cree LED Type XM-L Emitter BIN T6 Color BIN Cool White Number of Emitters 1 Working Voltage 3.7~7.5 V Power Supply 1 x 18650 / 2 x 18650 Current 1600 A Theoretical Lumens 400 lumens Actual Lumens 400 lumens Runtime 3 Hour Number of Modes 3 Mode Arrangement HiMidFast Strobe Mode Memory No Switch Type Others Switch Location Side Lens Plastic Reflector No Band Length 35 cm Compatible Circumference 40~52cm Beam Range 200 cm Packing List 1 x Headlight 1 x Charger (100~250V / 2-flat-pin plug / 50cm)