Brand UltraFire Model D77 Quantity 1 Color Black Material Aluminum alloy Emitter Brand Cree LED Type XM-L Emitter BIN T6 Color BIN Cool White Number of Emitters 6 Working Voltage 4.2~8.4 V Battery Configuration 4 x 18650 batteries pack (4200mAh / included) Circuitry 2500mA Brightness 3000 lm Runtime 2 hours Number of Modes 3 Mode Arrangement Hi>Mid>Fast Strobe Mode Memory No Switch Type Reverse clicky Switch Location Tailcap Lens Glass Reflector Aluminum Smooth Flashlight Mounting Handlebar and helmet Beam Range 150m Strap Included No Clip Included No Packing List 1 x Bike light (70cm-cable) 1 x 18650 batteries pack (4200mAh with two parallel two series 50cm-cable) 1 x AC power charger adapter (2-flat-pin plug 100~240V 50/60Hz 120cm-cable) 1 x Headband (50~80cm) 2 x Rubber O-rings