Brand UltraFire Model D88-L2 Quantity 1 Color Black+silver Material Aluminum Alloy Emitter Brand Cree LED Type XM-L2 Emitter BIN T6 Color BIN Cool White Number of Emitters 3 Working Voltage 7.2~8.4 V Battery Configuration 4 x 18650 Batteries (4400mAh with two parallel two series) Circuitry 2800mA Brightness 2000 lm Runtime 2 hours Number of Modes 5 Mode Arrangement Turbo>Hi>Mid>Low>Fast Strobe(Press the switch for 3-5s to turn off the bikelight) Mode Memory No Switch Type Reverse clicky Switch Location Tailcap+bezel Lens Plastic plane lens Reflector No Flashlight Mounting handlebar and helmet Beam Range 250m Packing List 1 x Bikelight with cable (60cm) 1 x 18650 Battery pack with cable (4400mAh with two parallel two series 60cm) 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