"Celestron Gamekeeper 10x25, The Celestron 71342 Gamekeeper 10x25 binocular is incredibly robust that meet the requirements of every outdoor enthusiast
Multi-coated optics and BaK-4 prisms dramatically increase light transmission, contrast and resolution for sharper more detailed images. The compact, lightweight design is ideal for use on any excursion when weight and size are an issue. Extremely portable binocular that can easily fit in a backpack, pocket or in a glove box. Great grab and go binocular.Fully waterproof housing for use in all weather conditions and peace of mind when unexpected weather rolls in. The housing is also filled with dry nitrogen gas to prevent the internal lenses from fogging when moving between extreme temperatures or when using the binocular in damp conditions. Wide field of view allows the subject to be brought into view quickly. The larger viewing area allows the subject to move within the viewing area without constant movement of the binocular. Especially useful for subjects that move often or quickly (birds, sports, etc.). The twist up eyecups allows the user to position their eyes at the perfect distance to obtain a full field of view offering comfortable viewing for both eyeglass and non eyeglass wearers 71342 Features: Product # 71342, Roof Prism Binocular, Gamekeeper 10x25 Binocular, Multi-Coated Optics, High-Quality BaK-4 Prisms, Waterproof & Fogproof, 10x Magnification, 25mm Objective Lens, Twist-up Eyecups f/ Quick Adjustment, Specifications: Diameter: 25 mm (0.98 in), Magnification: 10 x, Angular Field of View (deg): 6.3°, Linear Field of View (@1000 yds): 330 ft (110 m), Exit Pupil (mm): 2.5 mm (0.1 in), Eye Relief (mm): 10 mm (0.39 in), Near Focus (Binoculars): 19.7ft / 6m, IPD Max: 72 mm (2.83 in), IPD Min: 56 mm (2.2 in), Prisms: BAK-4, Optical Coatings: Multi-Coated, Weather Proof: Water Resistant, Tripod Adaptable: Yes, Includes: Neck Strap, Carrying Case, Cleaning Cloth"