bgat vs. bt

[the breeze]

can anyone explain what the difference is? i have an oppurtunity to buy some bgat's but if the bt's are better then maybe i will wait. thx for the help

[Pinewood]

B means briller or suitable for eyeglass wearers. T* is the lens coatings. In this case multicoatings. GA means rubber armored. P* or phase coating is very important for roof prism binoculars. Of which binocular are you writing?

Happy bird watching,
Arthur Pinewood