The 15-40x50mm Colorado Compact Spotting Scope is an unrivaled blend of ruggedness, durability, and exceptional fully coated optics, balancing pure performance with value. Multicoated glass and a BK-7 Porro prism transmit bright contrast-rich images throughout the zoom range. Perfect for birders, hunters, and naturalists, this spotter delivers astounding brightness and clarity for optimal viewing. Variable zoom magnification lets you lock on to your subject and zoom in for greater detail. An included mini tripod is foldable and convenient for terrain navigation and nature observation on the go.