The Yukon Spartan 3x42 night vision monocular is an incredible multi-functional unit; both compact and lightweight, this versatile monocular weighs only 13oz. Featuring a durable, Rubber Armor body the 3x42 is weather resistant and completely capable of being taken off the beaten path. The built-in Pulse IR system uses a powerful infrared illuminator to provide added light detection under conditions where there is little or no detectable light and the illuminator’s pulsating beam reaches 2 to 3 times farther than other infrared systems and reduces battery drain.