The best price for Pentax AD 10x25 WP is $170.95. This is presently the cheapest offer found from comparing prices from 2 shops in Australia. This model is among the most popular products in the Binoculars category and has an average rating of 5.0 out of 5 from one review.
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.