Feature A Precision Holds for Long-Range Shooting: Etched VCT-20A Reticle with Christmas Tree Pattern for Fast Follow-Up Corrections A Crystal-Clear Imaging: German Schott HT Glass, LaREE Lens, and VePRO FMC Ensure 90% Light Transmission A Engage Long-Range Targets: 30mm Monotube Maximizes Elevation Range to 20 MIL, with 4-Inch/100mm Eye Relief A Reliable Adjustment: Zero Stop to Effortlessly Return to Pre-Set Zero, with Turret Lock to Prevent Accidental Changes Specification A Magnification: 4-24x A Objective Lens Dia.: 50mm A Ocular Lens Dia.: 42mm / 1.7in A Ocular Lens Length: 54mm / 2.1in A Exit Pupil: 9.5-2.1mm A Optics Coating: Fully-multi coat diamond clear A Field of View: 31.1-5.2 Feet @ 100 yards A Field of View: 10.4-1.7M@ 100 meters A Eye Relief: 100mm / 4.0in A Length: 370mm / 14.6in A Weight: 670g / 23.6ozA Tube Dia.: 30mm Monotube A Click Value: 1/10 MIL A Elevation Range: >20MIL A Windage Range: >20MIL A Parallax Setting: 100 yards A Side Focus: 15 Yds to infinite A Reticle: Etched glass VCT-20A A Illumination: 6 gear A Battery Type: CR2032 A Shock tested to 750g, water proof at 1m A Fully nitrogen purged to eliminate any fogging of the lenses internally A Turret lock system. Coming with zero re-set feature A High quality 6061 T6 aircraft grade aluminum A Focus mark: 15, 20, 30, 50, 75, 100, 200, 300, 500 and infinite A Diopter compensation from fast-focus eyepiece (+2 to -3) A Including items: 30mm picatinny high ring (default) or weaver, instruction, DIY spare elevation turret, lens caps and cleaning cloth etc. Reticle Compatible Gun Type For Long-range: Tikka T1x / T3 / T3x (.22LR / .308), Remington 700 / 783 (.223), Sako, Anschutz, Howa