Model SL-8001 Quantity 1 Color Black + Red Material Aluminum alloy Emitter Brand Cree LED Type XM-L Emitter BIN T6 Color BIN Cool white Number of Emitters 1 Working Voltage 3.7~4.2 V Battery Configuration 4 x 18650 battery pack Circuitry 1500~2800mA Brightness 551~870 lm Runtime 3~4 Number of Modes 4 Mode Arrangement Hi > Mid > Low > Fast strobe Mode Memory No Switch Type Forward clicky Switch Location Tailcap Lens Glass Reflector Aluminum smooth / SMO Strap Included No Clip Included No Band Length 50cm Beam Range 150m Other Feature Hard anodized; Press for 3s in any mode will enter into fast strobe Packing List 1 x Headlamp 1 x Head band 1 x 18650 battery pack 1 x Battery holder 1 x 2-Flat-Pin plug power adapter (100~240V 100cm) 2 x Rubber rings