Affordable. Constructed to withstand the most brutal environments and changes in altitude without fogging, leaking or loss of alignment. 1" tube. Waterproof, fogproof and shockproof. Wide view, with 10% more FOV than standard scopes. 1/4 MOA windage and elevation adjustment. Magenta multi layered lens with fully coated optics. Eyebell focus. 3" eye relief.