Brand UltraFire Model D77-L2 Quantity 1 Color Black Material Aluminum Alloy Emitter Brand Cree LED Type XM-L2 Emitter BIN T6 Color BIN Cool White Number of Emitters 6 Working Voltage 7.2~8.4 V Battery Configuration 4 x 18650 Batteries (4400mAh with two parallel two series included) Circuitry 2800mA Brightness 3600 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 250m Strap Included No Clip Included No Packing List 1 x Bikelight with cable (70cm) 1 x 18650 Battery pack with cable (4200mAh with two parallel two series 50cm) 1 x 2-Flat Pin-Plug power charger with cable (120cm 100-240V 50/60Hz) 1 x Headband (50~80cm) 2 x Rubber O-rings