Utilizes a UHi 25 LED with a max output of 800 lumens. Max peak beam intensity of 15,700cd and max throw of 250 meters. An optical system combined with crystal coating and "Precision Digital Optics Technology" (PDOT). A single tail switch controls 3 brightness levels. Powered by 1x14500 li-ion battery while compatible with 1xAA battery. Includes a NITECORE 14500 rechargeable li-ion battery (NL1411R 1,100mAh) with a built-in USB-C charging port, offering a runtime up to 10 hours. Intelligent brightness memory function. Highly efficient constant current circuit provides a stable output. Incorporated Advanced Temperature Regulation (ATR) module. Two-way clip included. Electronic reverse polarity protection. Optical lenses with double-sided scratch resistant coating. Constructed from aero grade aluminum alloy. HA III military grade hard-anodized finish. Tail stand capability. Waterproof and dustproof rating in accordance with IP68 (2 meters submersible). Impact resistant to 2 meters.