10x42 ED Binoculars Professional Waterproof 7° Ultra Wide View Angle Powerful Telescope for Adults Bird Watching Travel

Magnesium Alloy Body

This10×42 binocular is made of magnesium alloy with low density , strong impact bearing capacity and high quality magnesium alloy body. So you don't have to worry about breaking them in the open air.

Nitrogen Purging Waterproof

The O-rings inside the binoculars are completely sealed to prevent moisture, dust and debris from entering the optics. Nitrogen purging prevents fogging in extreme weather conditions.

Bak-4 Prisms

Type bak4 glass is a fine,dense optical glass that removes glass effctively internal lighting reduces light losses,but the price is more expensive generally used in high-end optical products

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