Features: Unlimited eye relief Built in fully adjustable laser sight Five brightness settings for Red Dot Sight Ability to use Red Dot or Laser Individually, or both at the same time Built in Quick Release Mount for use with most Weaver Style/Picatinny rails LED (Light Emitting diode) 100% safe for the eyesSpecifications: Material: Black Anodized Aluminum Length: 4.35in Width: 3.45in Height: 3in Weight: 11.3oz Mount Length: 3in Objective Lens Diameter: 40mm Magnification: 1x Reticle Type: Red Dot Dot Size: 3 MOA Click Value: 1 MOA Lens Coating: Ruby Battery Type: CR2032 Laser Wavelength: 635-655nm