The SVS 1-6x optic is a true 1x optic with a 34mm tube, second focal plane 2MOA daylight visible red dot, MIL scale reticle, built in throw lever, and capped zeroing knobs for both windage and elevation with 2/10 MIL adjustments. The second focal plane red dot intensity can be adjusted via a 10-position rheostat, with the lower 3 settings being night vision compatible. The MIL Scale reticle features a set of simple crosshairs with 2 full MILs left and right, as well as 1, 2, 4, and 6 MILS below the center on the vertical axis. Common Characteristics Magnification: 1-6x Diopter: +2 to -3 Parallax Adjustment: Fixed @ 100yds Field of View @ 1x: 107.5' @ 100yds. Field of View @ 6x: 18.65 ’ @ 100 yards Eye Relief: 3.5” Objective Lens Housing Diameter: 1.338? / 34mm Tube Diameter: 1.33” / 34mm Overall Length: 10.130 ” Objective Lens Diameter: 0.94” / 24mm Ocular Lens Diameter: 1.45” / 37mm Weight: 22.2oz Illumination: 2 MOA Red Dot Battery: Lithium Coin, CR2032 Battery Runtime: Up to 500 Hours Material: Aluminum, 6061-T6 Finish Color: Matte Black SVS 1-6x Specifications Elevation Knob: 2/10 MIL Zeroing Knobs Windage Knob: 2/10 MIL Zeroing Knobs Reticle: SVS MIL Scale, Second Focal Plane Red Dot: 2 MOA, Second Focal Plane