There are basically four grades of coated lense binoculars although some manufacturers have developed their own, exclusive, high quality coatings which offer greater durability and further improved light transmission with other added advantages:

Coated lense binoculars means that one or more surfaces are covered with one layer of anti-reflective coating. If only one or a limited number of air to glass surfaces are covered such binoculars will provide you little more light transmission than binoculars with no lens coatings. If the lenses are fully coated it means that air to glass surfaces are covered with one layer of anti-reflective coating. Multi-coated lenses means that one or more air to glass surfaces are covered with multiple layers of anti-reflective coating. You have to be careful as just one surface could be coated! Fully multi-coated lense binoculars are the best that you can buy. All air to glass surfaces are covered in multiple layers of anti reflective coating.

Fully coated lenses can increase light transmission from 50% to around 80 - 85% which is now the norm for low cost optics. If you want something a bit more special that will increase light transmission to 95% or above then you want to go for fully multi coated lense binoculars and, for extra durability and advance quality viewing, take a look at the exclusive coatings offered by some of the top manufacturers. Bushnell Elite come with Bushnell's exclusive XTR technology (60 layers of coatings on each prism) which delivers 99.73% light transmission per lens.

The difference between fully coated lense binoculars and fully multi-coated might not sound that great but once you have owned Monocular Telescope with the best quality optics and coatings you'll never look back. The light transmission, resolution and clarity of top quality lenses is amazing and the enhanced viewing generally makes the higher price tag well worth it.A few fully multi coated lense binoculars are Bushnell Elite, Bushnell Legend, Bushnell Natureview, Pentax DCF SP / XP and HR II, Pentax PCF, Nikon HG L DCF and Olympus EXPS I Series Binoculars.
 

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