MEOPRO R5 2-10x42 Riflescope. An excellent riflescope designed for high-powered rifles, with a 1-inch tube. It features MeoBright lens coatings for optimal light transmission and a MeoDrop hydrophobic, water-repellent coating. FEATURES: - 10-year warranty. - Waterproof. - Magnification: 2-10x - Objective Lens: 42mm - Main Tube Size: 25.4mm - Eye Relief (mm/in): 92/3.6 - Field of View (m/100m/ft/100yds): 18.6-3.8/55.7-11.5 - Field of View: 10.6-2.2° - Focal Plane Position: 2" - Daylight Transmission: 91% - Impact per Click (cm/100m/in/100yds): 0.7/0.26 - Elevation and Windage Adjustment Range (cm/100m/in/100yds): 75/63 - Parallax Correction: 10yd-infinity - Length (mm/in): 308/12.1 - Weight (g/oz): 590 20.8 - Nitrogen Filled. - MeoBright 5501: Patented ion-assisted multi-coating applied to all optical surfaces. Developed by Meopta, MeoBright™ ion-assisted multi-coatings eliminate glare and reflections and provide an industry-leading 99.7% light transmission per lens surface.