WHISRIV 8x42 Binoculars for Adults, Rugged Design, Bak4, Lanthanide ED Glasses, FMC, Wide FOV, Nitrogen Purged Waterproof

Lanthanide ED Glass: Reduced chromatic aberration, spherical aberration, improved light transmission, it grants exceptional brightness, great color fidelity and also maintains high performance in low light conditions. HD Prism & Advanced FMC: Our advanced Bak-4 prism take the advantage of dielectric coating, which reflects over 99% of the light, and our advanced FMC uses broadband anti-reflection coating on every air-to-glass surface, which brings Optimum brightness, and true color throughout the light spectrum. Nitrogen Purged Waterproof: Usage of insert gas and O-ring structure maintains the pressure of the cavity, prevents fogging and moisturizing from inside, and the absence of oxygen helps preventing corrosion of the glass and coatings, making it suitable for extreme conditions Ergonomically Design: Aluminum alloy cavity along with rubber-armored body, features rich texturing, providing non-slip grip. calibrated damping feel during focusing adjustment give you joyful fast adj