Low dispersion (ED) glass lens, to achieve color-variation compensation, and make observation more clear
Flat field optical design, to improve visual experience
Wide- angle optical design, with broaden horizon and more comfortable when using
SMC (multilayer film coating) can decrease the Visible/Near Infrared (VIS/NIR) Spectral Reflectance. Make images more sharp, clear and bright
High-reflecting film with multiple coating film, return the original real color
Nitrogen filled waterproof （water depth 1m, available to soak 30 minutes) antifogging
Magnesium aluminum alloy body, antioxidant， fall resistance , strong , high and low temperature resistance, make time expend