Model SL-8001 Quantity 1 Color Black + Silver 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 (4400mAh included) Circuitry 2800mA > 2300mA > 1500mA > 2800mA Brightness 870 > 760 > 551 > 870 lm Runtime 4 hours Number of Modes 4 Mode Arrangement Hi > Mid > Lo > Fast strobe (Long pressing 3 seconds under Hi / Mid / Lo mode) Mode Memory No Switch Type Forward clicky Switch Location Tailcap Lens Glass Reflector Aluminum Smooth / SMO Strap Included No Clip Included No Band Length 25~50cm Suitable Head Circumference Adjustable for different head sizes. Beam Range 150 meters Other Feature Water resistant Packing List 1 x Headlamp (80cm-cable) 1 x Headband 1 x 18650 battery pack (30cm-cable) 1 x Battery case 1 x 2-flat-pin plug power charger (100~240V / 1.4m) 2 x Rubber rings 1 x Chinese / English user manual