The Comanche-40ER Night Vision Clip-On (NVCO) system uses the latest advances in night vision clip-on technology. Designed for long-range nighttime shooting, the Comanche-40ER delivers exceptional clarity, reliability, and versatility providing the most significant functionality and features at the lowest possible price. The Comanche-40ER is mounted to a standard Weaver or Picatinny rail in front of an existing day scope and transforming it into a night vision device with capability up to ranges of 1000 yards with no re-zeroing required. This NVCO can be used with day scopes of up to 10x magnification. Comanche-40ER is equipped with a quick release mount and remote control. It provides unmatched target acquisition and enhanced aiming capabilities, making it extremely practical and effective during the most challenging missions. Features Simple, quick conversion of daytime scopes to NVDs Manual gain control Mounts in front of any daytime scope, no re-zeroing required Equipped with a wireless remote control Powered by a single Alkaline 1.5V AA or 3V CR123A Lithium battery Bright-light cut-off system Quick-release mount 3-Year Warranty