Natfire HS50 Headlamp LED EDC 18650 Rechargeable USB C Head Lamp 1000LM Bright Outdoor Fishing Torch with Magnet Tail Cap Natfire HS50 is a profeional, bright angle-head flashlight and toollamp, designed for multiple indoor and outdoor activities like camping, hiking, fishing or hunting. With the supplied headband it can also be used as a headlamp. It is powered by a single 18650 lithium-ion rechargeable battery, is rechargeable via USB-C (Battery not includes, if needed, please choose the second option "with 3400mAh Battery") Moreover, HS50 comes with an adjustable elastic strap, a magnetic tailcap and 4 helmet clips for flexible and convenient one hand operation. Specifications Emitter: 1x G2 LED 7000K Operating voltage: 2.7V 5V Battery options: Not includes Dimension: 100mm (length) x 24mm (head diameter) Weight: 45g / 0.1lb (without battery) Flashlight body: Aerospace grade 6061 grade aluminum alloy, CNC manufactured to hard-anodized to military grade specification type III, anti-abrasive finish to get solid built body, anti-crash geometry and better heat exchange. Water resistance i.a.w. IP-66 Reverse polarity protection to protect against improper battery installation. Advanced Temperature Regulation (ATR) technology: ATR automatically reduces the brightne level when the driver temperature reaches 60C to prevent overheating Light Mode - Group 1: High, Med, Strobe - Group 2: Hold the switch to SOS mode Operation Instructions Important advice: Click means pre and immediately release the button. Hold means pre and keep holding the button