Hawke Endurance ED 13-39x50 Spotting Scope 13-39x magnification 45-degree angle Objective lens: 50mm FOV @ 1000yds.: 171-90ft. (57-30m @ 1000m) Angular FOV: 3.3Adeg-1.7Adeg Eye relief: .8" (20mm) Exit pupil: .15"-.05" (3.8mm-1.3mm) Close focus: 8.2ft. (2.5m) System H5 optical system Extra-low dispersion ED glass Fully-multicoated lenses Dielectric prism coating Dual focus knob (coarse and fine) Digi-scope compatible BAK4 Porro prisms Rotating ring Waterproof Nitrogen purged Fog proof Tripod mounting thread: 1/4" - 20 UNC Twist up eyecup Pull-out sunshade Includes lens covers, stay-on soft cover, carry strap, lens cloth, instruction manual Length: 10.6" (270mm) Weight: 29.3oz (830g) Hawke No-Fault Lifetime Warranty (limited to 2 years on the eyepiece)