Color Black Brand E-Smart Quantity 1 Piece Material Engineering plastics + aluminum alloy Emitter Brand Cree LED Type XM-L Emitter BIN Q5 Color BIN Cool White Number of Emitters 1 Working Voltage 3.7~4.2 V Power Supply 1 x 14500 battery or 1 x AA battery (not included) Current 1200 mA Theoretical Lumens 250 lumens Actual Lumens 220 lumens Runtime 3~5 Hour Number of Modes 3 Mode Arrangement HiLowFast Strobe Mode Memory No Switch Type Clicky Switch Switch Location Side Lens OthersResin Reflector No Band Length 54 cm Compatible Circumference 58~65cm Beam Range 180 m Other Features For the rider and mountaineering enthusiasts Packing List 1 x Head strap (54cm) 1 x Headlamp