Nikon Action 7x50 Binocular The BaK-4 roof prisms are

The BaK-4 roof prisms are both phase- and dielectric coated for increased contrast and light transmission along with their fully multi-coated lenses

This Konus Giant 20x80 Binoculars is particularly suitable for astronomical use

Added features include a locking diopter control

With waterproof

This eyepiece is a major upgrade from the TSN-553's TE-9Z

Nikon Action 7x50 Binocular The BaK-4 roof prisms areThe Nikon Action 7x50 Binocular is a Porro prism design made of lightweight but strong aluminum alloy covered with textured rubber armoring for a solid grip in any conditions. It features a 336' field of view at 1000 yards and a close focus of 26. 2'.