Visionking 20-60x60 Waterproof Spotting Scope Zoom Bak4 Spotting Scope Monocular Telescope for Birdwatching / Hunting With Tripod

Specifications: 1. Objective dam(mm): 60mm 2. magnification: 20-60x 3. Field of view(m/1000m): 45-15 4. Exit pupil(mm): 4-1.33 5. Close focus distance(m): 10 6. Prism glass: Bak4 7. Eye-Relief(mm): 18