The Nitecore MH2A uses a CREE XM-L U2 LED, capable of producing a maximum output of 600 Lumens. Its high efficiency regulation circuit enables the MH2A to run for 26 hours. An intelligent circuit with voltage detection lets you charge your flashlight safely and quickly. For outdoor use, the integrated micro-US charging port is water, dust, and impact resistant. Multiple output modes are conveniently accessed with the rapid rotary switch. User defined modes provide customized brightness levels plus strobe and SOS modes, stored but the intelligent memory function. The MH2A uses an optimized ultra-precise reflector, offering a longer beam distance than its competitors. The lens is made from toughened ultra-clear mineral glass with an anti-reflective coating. As with many Nitecore flashlights, it comes with reverse polarity protection.