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 for Bright and Sharp Views A Extended Adjustment Range: 30mm Tube with 16.5 MIL Elevation Range, 4-Inch/100mm Long Eye Relief for Flexible Shooting Positions A Reliable Turret System: Zero Stop for Effortless Return to Pre-Set Zero, with Turret Lock to Prevent Some Accidental Adjustments Specification Magnification: 5-30x Objective Lens Dia.: 56mm Ocular Lens Dia.: 42mm / 1.7 inch Ocular Lens Length: 54mm / 2.1 inch Exit Pupil: 9.5-1.9mm Optics Coating: Fully-multi coat diamond clear Field of View: 24.9-4.2 Feet@ 100 yards Field of View: 8.3-1.4M@ 100 meters Eye Relief: 100mm / 4.0 inch Length: 400mm / 15.7 inch Weight: 725g / 25.6 ounce Tube Dia.: 30mm Monotube Click Value: 1/10 MIL Elevation Range: >16.5MIL Windage Range: >17.5MIL Parallax Setting: 100 yards Side Focus: 15 Yds to infinite Reticle: Etched glass VCT-20A Illumination: 6 gears Battery Type: CR2032 Finish: Black matte IP67 water proof at 1 meter for 30 minutes Zero-Stop elevation adjustment system with turret lock feature Recoil tested to 750g Fully nitrogen purged to eliminate any fogging of the lenses internally Offer one extra DIY elevation turret High quality 6061 T6 aircraft grade aluminum Focus mark: 10,15, 20, 30, 50, 75, 100, 200, 300, 500 and infinite Diopter compensation from fast-focus eyepiece (+2 to -3) Including items: 30mm picatinny high ring (default) or weaver, instruction, DIY spare elevation turret, lens caps and cleaning cloth etc. Reticle Video Realtions Compatible Gun Type For Long-Range: Tikka T1x / T3 / T3x (.22LR / .308), Remington 700 / 783 (.223), Sako, Anschutz, Howa