Get it by Tuesday August 22nd by choosing the expedited option during checkout.
Objective lens diameter: 70mm; magnification: 20-100x
Angular field of view: 1.25 degrees; exit pupil: 3.5mm
Eye relief: 22mm; Prism Glass: BaK-4
Twilight factor: 37.41
Relative brightness: 12.25
Celestron sky master 20-100x70 zoom binoculars are large aperture binoculars Great for astronomical viewing or for
terrestrial (land) use, especially over long distances. They feature high quality BAK-4 prisms, multi-coated optics, and
long eye relief that is excellent for eyeglass wearers. Provides diopter adjustment for fine focusing.