Binocular Celestron SkyMaster 15x70

General Features 15x magnification porro prism binocular Large 70 mm objective lens offers maximum image brightness in low-light and long-range conditions Ultra sharp focus across the field of view 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 adapter included 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 Specification Diameter : 70 mm ( 2.76 in) Magnification : 15 x Caps : Yes Strap : Yes Carrying Case : Nylon Weight ( oz) : 48 oz ( 1361 g) Angular Field of View ( deg) : 4.4 ° Linear Field of View ( @ 1000 yds) : 230 ft ( 70 m) Exit Pupil ( mm) : 4.7 mm ( 0.19 in) Eye Relief ( mm) : 18 mm ( 0.71 in) Near Focus ( Binoculars) : 43 ft ( 13 m) 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