With the expansive field-of-view of a binocular and the magnification of a variable power spotter you get the ultimate in optical flexibility with Burris Compact 12x-24X - 50mm Spotting Scope. On the other hand, the Burris 20X 50mm Compact Spotting-Scope's fixed power simplicity provides optimum optical design. Burris 12-24x50mm Spotting Scope is waterproof and fogproof and you also get a large field of view, light weight and a compact, durable construction.
When there's plenty of light, mirage severely limits the use of more than 20X-24X magnification anyway and in low light, about 20X is all that's useful unless you have an 80mm or larger objective lens. Fully multicoated optics guarantee if you choose the Burris Spotting Scope, you'll get all the brightness and clarity you've come to expect from Burris.