Color Black Brand UltraFire Model U-33 Quantity 1 Piece Material Aluminum Alloy Emitter Brand Cree LED Type XM-L Emitter BIN T6 Number of Emitters 7 Color BIN Cool White Working Voltage 7.2~8.4 V Power Supply 1 x 18650 Battery Pack (4 x 18650 batteries with two parallel two series included) Current 2800 mA Theoretical Lumens 4200 lumens Actual Lumens 3500 lumens Runtime 2~3 Hour Number of Modes 3 Mode Arrangement HiLowFast Strobe Mode Memory No Switch Type Reverse clicky Lens Glass Reflector Aluminum Smooth Flashlight Mounting Handlebar and Helmet Switch Location Tailcap Beam Range 300 m Packing List 1 x Bike Light (70cm) 1 x 18650 Battery Pack (4200mAh with two parallel two series 50cm) 1 x 2-Flat Pin-Plug Charger (120cm 100~240V 50/60Hz) 1 x Headband (50~80cm) 2 x Fixed Rubber O-rings