Brand SingFire Model SF-810 Quantity 1 Color Green + yellow Material Plastic Emitter Brand Semileds LED Type P20 Emitter BIN C35 Color BIN Neutral White Number of Emitters 1 Working Voltage 3.7 V Battery Configuration 1 x 103450 battery (built-in battery 1800mAh) Circuitry 1000mA Brightness 100 lm Runtime 2~3 hours Number of Modes 2 Mode Arrangement Hi>lo Mode Memory No Switch Type Reverse clicky Switch Location Bezel Lens Glass Reflector Plastic Smooth Strap Included No Clip Included No Band Length 40cm Suitable Head Circumference 30~60cm Beam Range 40 meters Other Feature 90 degrees adjustable; The headlamp with built-in battery design with a charging port on head convenient for charging. With adjustable elastic head band easy to wear on/off Certification CE / RoHS Packing List 1 x Headlamp 1 x AC power charger adapter (Input: AC 100~240V / 50~60Hz; Output: DC 4.2V / 500mA; 2-flat-pin plug; 94cm-cable) 1 x English user manual 1 x Plastic green box