Celestron Hummingbird 7-22x50mm ED Micro Spotter Birder-Friendly Spotting Scope, Black (52307) Easily carried in vest or coat pocket, in belt pack, or shoulder bag ED lens optical system provides sharp, clear images with vivid, well-managed color 7-22x magnification range spans binoculars and spotting scopes Birder-friendly close focus distance: 10 ft. / 3m close focus satisfies birding field optic requirements Waterproof / Nitrogen filled -- Protected against wet weather, humid conditions, and other environmental challenges