The best price for Olympus 8x21 RC II WP is $66.47. This is presently the cheapest offer found from comparing prices from 4 shops in Australia. This model is among the most popular products in the Binoculars category and has an average rating of 3.8 out of 5 from 8 reviews.
The larger the diameter, the more light is captured. A diameter of 30 mm suffices during day-light conditions, but larger lenses are required during low-light conditions.