Brand SingFire Model SF-551B Quantity 1 Color Black + silver Material Aluminum alloy Emitter Brand Cree LED Type XM-L Emitter BIN T6 Color BIN Neutral White Number of Emitters 1 Working Voltage 4.2 V Battery Configuration 2 x 18650 batteries (included) Circuitry 2500mA Brightness 800 lm (actual 550lm) Runtime 2~5 hours Number of Modes 3 Mode Arrangement Hi > Low > Fast Strobe Mode Memory No Switch Type Reverse clicky Switch Location Bezel Lens Plastic Reflector No Strap Included No Clip Included No Band Length 40cm Suitable Head Circumference 30~60cm Beam Range 200~500 meters Other Feature Zoom-to-throw; Great for night walking and other outdoor activities such as fishing hunting etc.; Modes and function: 1. high light 100% 2. low light 50% 3. strobe (10Hz); Three modes a circle long press can enter police strobe in any mode Certification CE / RoHS Packing List 1 x Headlamp 2 x 18650 rechargeable batteries 1 x AC power charger adapter (Input: AC100~240V / 50~60Hz; Output: DC 4.2V/ 5 00mA; 2-flat-pin plug 95cm-cable) 1 x English user manual