Sharing the research outcome for binoculars that I did and might be useful for others.

Suggested features that should be there in the binoculars:

- 8 X 40 (8 X 25 is a little lighter)
- Exit pupil – 5mm
- BAK – 4 lenses
- Prefer Roof prism, though it will make it little expensive. (Porro prism, less expensive, but a little heavier)
- Fully multi coated lenses preferred (fully coated are a NO, multi-coated acceptable)
- Diopter adjustment is sort of essential
- Eye relief – 14 / 15mm, more the better, upto around 17 mm
- Weight – upto 30 ounces is good to carry on neck, else shoulder straps should be used
- waterproof - just desirable, helps in rain, if accidentally falls in water etc.
- Armoring helps as it provides more protection to the body (it is rubber cover)

Link is:
http://ping.fm/E8jPf