558 Holographic Sight

Magnification:1X unlimited eye-relief Fittings:Scope cover,Lens cleaning cloth Type Illuminated: 20 level brightness red and green reticle to provide maximum flexibility in different lighting conditions Focus Type: Fixed Material: aluminum alloy aircraft grade Easy to setup, fits any 20mm Rail elevation adjustment and view of the side of Leverage Shockproof and weatherproof materials Easy to install with built-in quick detachable Battery: CR123 * 1 battery Function key: Up arrow button: Power on and increase brightness Down arrow button: Power on and reduce glare Up and down arrow keys: off, pressing the keys simultaneously to turn off