Celestron SkyMaster 25x100mm Porro Binoculars

Specifications Magnification: 25x Objective Lens Diameter: 100mm (3.94″) Focal Length of Objective Lens: 417.32mm (16.43″) Angular Field of View: 3° Linear Field of View (@1000 yds) / @1000 m): 156 ft (52 m) Exit Pupil: 4mm (.15″) Eye Relief: 15mm (.59″) Close Focus: 80 ft (24.4 m) Interpupillary Distance (max): 72mm (2.83″) Interpupillary Distance (min): 56mm (2.20″) Diopter Adjustment Range: ±5 Twilight Factor: 50 Relative Brightness: 16 Limiting Stellar Magnitude: Ideal: 12.50 | Moderate: 11.50 | Poor: 10.50 Lens Coatings: Multi-Coated Prism Glass (Type): BaK-4 Prism Coatings: N/A Weight: 140 oz (3969 g) Environmental Protection: Water Resistant Nitrogen Filled: No Tripod Adaptable: Yes Carrying Case: Nylon Dimensions: 256mm x 130mm x 388mm (10.1″ x5.1″ x 15.28″)   25x magnification porro prism binocular Giant 100 mm objective lens offers maximum image brightness in low-light and long-range conditions Ultra sharp focus across the field of view Individual Eyepiece Focus to ensure optimal focus position Multi-Coated optics for sharp, clear views Suitable for long-range terrestrial or astronomical viewing Protective rubber covering for ultra-firm grip Integrated tripod adapter rod for ultra-stable tripod mounting Long eye relief ideal for eyeglass wearers Deluxe padded carrying case included for travel and safe storage Limited Lifetime Warranty provides best protection and product support on the market Included Items: Objective lens caps | 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. Support Documents SkyMaster Series Manual Support Videos Recommended Accessories Universal Smartphone Adapter – To capture pictures of Objects seen in the binoculars (Terrestrial objects, Moon and planets) right in your smartphone immediately as you observe it.