Whether you’re bird-watching, sightseeing or folllowing some sporting action, the Whitby Gear WG821 binocular’s multi-coated optics deliver superior light transmission and brightness for superb long distance magnification.  (8 x magnification and 21mm objective lens diameter)  The WG821 binocular utilises patented Porro prisms for images that are crisp and clear, while the centrally positioned focus knob provides quick and easy adjustment using one finger. The rugged design features a non-slip rubber body, ensuring a secure grip when in use. Dimensions: 10 x 7 x 4cmWeight: 165g