Northtac RONIN-V10: The Ronin V-10 is a military grade compact reflex sight that features a side battery housing, low profile windage & elevation adjusting turrets, and a red dot that utilizes new state-of-the-art LED technology allowing 50,000 hours of operation on a single battery. The motion-sensing red dot automatically turns on with minimally applied pressure and will enable the auto-shutoff feature when left static for long periods. The Picatinny MIL-STD 1913 mount allows the unit to be installed on various firearms such as rifles, shotguns, pistols, air rifles and crossbows. Compact lightweight design Motion sensing design turns on automatically when it senses movement, auto-shutoffs when left static for an extended period of time Includes high mount for 20mm accessory rail Provides up to 50,000 hours on a single AAA battery Adjustable windage and elevation