Svbony Spotting Scope 20-60X80 Zoom Refractor Telescope Multi-Coated Silver Prism Waterproof Outdoor Optics with Tripod SV13Brand Name: svbony Origin: CN(Origin) Model Number: SV13 Magnification: 20x 60x Objective lens diameter (mm): 80 Field of Angle (Degree): 1. 58 0. 91 Field of View (ft 1000yds): 82. 9ft 48ft Field of View (m 1000m): 27. 6m 16m Resolution ("): 2. 37" Exit Pupil (mm): 3. 3mm 1. 22mm Eye Relief (mm): 17. 9mm 15mm Near Focus (m): 6m Waterproof: YES Nitrogen Filled: Yes WP Depth Mins: 1m 5mins Prism Material: Bk7 Prism Coating: Silver + MC Lens Pcs Groups: