W ultraviolet light at 365nm wavelength Integrated "Precision Digital Optics Technology" provides extreme reflector performance OVERVIEW Modeled after the Red Dot Award winning Nitecore MH27, the MH27UV is an incredibly versatile, multi-purpose tool. With a Cree XP-L LED capable of throwing a beam up to a whopping 505 yards, offering up to 1000 lumens of brightness at your fingertips across four output levels, five special modes, and three constant colored lights of red, blue, and ultraviolet. - The UV light can be used for a variety of applications such as verifying IDs or money. The red LED offers a low-level tactical illumination while allowing you to preserve your night vision. The blue light can be used in hunting capacities to track blood trails and is well-suited for foggy nights. Turn on the light with the tactical tail cap switch and cycle through the modes with easy-to-use dual-button side switches. - The MH27UV also features a USB charging port to quickly and conveniently charge the single 18650 battery the light runs on. It can also run on 2 x CR123A batteries. Keep track of your 18650's charging status and remaining voltage via the blue light integrated into the light's side switches. - Weighing in at just six ounces, this compact tactical light can be taken anywhere in your backpack or pocket. It is perfect for law enforcement, hunting, and tactical operations.