Carson Tracker 8x21mm Compact Sport Binocular, Grey (TZ-821) 8x Magnification, 21mm Objective Lens Diameter, Ergonomically Designed Field of View: 371 feet at 1,000 yards, Multi Coated Lenses, Weight: 6.8 ounces Eye Relief: 10.5mm, Prism Type: BK-7, Features Roll-Down Eyecups Included Accessories: Pouch, Strap and Lens Cloth, Center Focusing Knob Backed by Carson's No Fault, No Hassle Warranty