Night Eyes Infrared IR-350 Gun Light is more compact, lighter, and brighter than most most IR lights on the market. Targets can be illuminated from well over 350 yards away even with this compact package. This illuminator has two brightness settings and clicking from on/off or one setting to another is silent enough to not spook off your predators. No adjusting or focusing is required with this gun light and a rechargeable battery and a 45 degree picatinny rail mount are included in this kit.