The Night Spirit-2 is a rugged and lightweight hand-held night vision monocular that uses multi-coated optics specially coated to gather light to provide bright and clear images coupled with state-of-the art quality image Gen 2 intensifier tubes. A built-in illuminator allows you to see clearly, even in total darkness. The Night Spirit-2 runs on a 1.5 volt AA size battery for up to 60 hours without IR, and is water and fog resistant.