Olympus EXPS I binoculars are rubber-clad for secure handling, and
feature fully multi-coated lenses and high index BaK 4 prisms for
bright, clear edge to edge viewing. A premium UV coat also reduces the
number of harmful ultra-violet rays passing through the lenses. All
models feature long eye relief with twist-up eyepieces for a full field
of view even if you wear glasses.