Brunton Zoom Pocket Scope 10-30x21 Monocular

One of the smallest zoom monoculars on the planet, yet well equipped with lens multi-coating and BaK-4 prism glass for a sharp image when you need it. Compact size keeps it close at hand, ready for use.
 
Features
- BaK-4 prism glass
- Multi-coated
- Tripod compatible
- Power: 10X - 30X
- Objective diameter: 21mm
- Eye relief: 12mm
- Exit pupil: 2.4mm - 1.8mm
- Field of view: 178 ft - 10 ft @ 1,000 yds
- Eye cup type: fold down
- Aluminum body
- Weight: 3.2 oz
- Close focus : 10 ft
- Includes: lanyard and case
- Limited lifetime warranty