Brand SingFire Model SF-539 Quantity 1 Color Black + red Material Aluminum alloys Emitter Brand Cree LED Type XM-L Emitter BIN T6 Color BIN Neutral White Number of Emitters 1 Working Voltage 8.4 V Battery Configuration 4 x 18650 Rechargeable li-ion battery Circuitry 2500mA Brightness 810 lm Runtime 4 hours Number of Modes 4 Mode Arrangement High / Middle / Low / Fast Strobe Mode Memory No Switch Type Full pressing Switch Location Tailcap Lens Glass Reflector No light cup Flashlight Mounting Handlebar and helmet Beam Range above 300m Strap Included No Clip Included No Features Zoom-to-throw; Water resistant / Surface anode under oxidation treatment; High light 100% middle light 50% low light 20% fast strobe (10Hz); Four modes recycle long press for about 3 seconds can shut down the light in any mode. Certification CE / RoHs Keywords Bicycle lamp / Headlamp Packing List 1 x Bicycle light (40cm-cable) 1 x Battery pack (30cm-cable) 1 x Charger (2-flat-pin plug / 110~240V / 110cm-cable) 1 x Headlights (flexible) 2 x Rubber rings 1x English user manual