PROSTAFF 3S features an optical system created from lead-and-arsenic-free Eco-Glass.
Multilayer coatings, which provide high light transmittance across the entire visible light spectrum, are applied for bright images.
High-reflectivity silver-alloy mirror coating applied on the mirror surfaces of the prisms for a bright and clear view.
Long Eye Relief: Nikon has manufactured the PROSTAFF 3S binoculars, as well as many other of its optics, with a high-eyepoint design for long eye relief without vignetting. This provides a clear field of view for everyone, even when the user is wearing eyeglasses.
PROSTAFF 3S binoculars are waterproof (up to 1m/3.3 ft. for 10 minutes) and fog-free with O-ring seals and nitrogen gas, making them the ideal binoculars to use for those who like hiking, birdwatching, attending sports events and other outdoor activities.
PROSTAFF 3S binoculars feature a 42mm-diameter objective lens — yet they are noticeably lightweight, with compact bodies, assuring superb portability. In addition, the large field of view allows the user to capture the subject easily, making these models particularly appealing to novices.