Constructed from rugged aero-grade aluminum alloy with HAIII military grade hard-anodized finish, the HC65 has a max output of 1,000 lumens available with triple output including the primary white light, the auxiliary high CRI white light and the auxiliary red light, suitable for wildlife observation, astronomy observation and night photography. With a max runtime of 800 hours, the headlamp can also be powered by a USB device to enable a constant power supply on the go without frequently changing the batteries.