SkyMaster 12X60MM Porro Binoculars

12x magnification porro prism binocular Large 60 mm objective lens offers maximum image brightness in low-light conditions Multi-Coated optics for sharp, clear views Suitable for terrestrial or astronomical viewing Protective rubber covering for ultra-firm grip Large center focus knob for easy focusing Tripod adaptable (adapter sold separately) Long eye relief ideal for eyeglass wearers Carrying case included for travel and safe storage Limited Lifetime Warranty provides best protection and product support on the market The SkyMaster series of binoculars have multi-coated optics and high index BaK-4 prisms for superb light transmission and increased contrast and resolution. Coupled with large objective lenses, BaK-4 prisms offer amazing light gathering capabilities making them ideal for stargazing and other low-light applications. With higher magnifications than standard binoculars, SkyMaster 12x60mm brings celestial objects up close, providing images with outstanding detail. View the heavens and the world around you with the SkyMaster Series Specifications Magnification: 12x Objective Lens Diameter: 60mm (2.36") Focal Length of Objective Lens: 228.11mm (8.98") Angular Field of View: 5.3° Linear Field of View (@1000 yds) / @1000 m): 278 ft (92 m) Exit Pupil: 5mm (.2") Eye Relief: 17mm (.67") Close Focus: 59 ft (18 m) Interpupillary Distance (max): 72mm (2.83") Interpupillary Distance (min): 56mm (2.20") Diopter Adjustment Range: -4 to +8 Twilight Factor: 27 Relative Brightness: 25 Limiting Stellar Magnitude: Ideal: 11.39 | Moderate: 10.39 | Poor: 9.39 Lens Coatings: Multi-Coated Prism Glass (Type): BaK-4 Prism Coatings: N/A Weight: 39.2 oz (1111 g) Environmental Protection: Water Resistant Nitrogen Filled: No Tripod Adaptable: Yes Carrying Case: Nylon Dimensions: 210mm x 206mm x 72mm (8.25" x 8.1" x 2.8") Included Items: Objective lens cap Rainguard Carrying case Neck strap Lens cloth Instruction manual Solar Warning Never look directly at the Sun with the naked eye or with this optic. Permanent and irreversible eye damage may result. Never use your optic to project an image of the Sun onto any surface. Internal heat build-up can damage the optic and any accessories attached to it. Never leave your optic unsupervised. Make sure an adult who is familiar with the correct operating procedures is with your optic at all times, especially when children are present.