Acuter waterproof fieldscopes are O-ring sealed and nitrogen purged providing waterproof, fogproof, and dustproof protection. Provides easy viewing while situated on a tripod, eliminating the need to stoop while viewing through the scope. 
- Aperture: 80mm 
- Focal Length: 480mm 
- Multi-coated 
- Power: 20X-60X 
- Eye Relief: 18-15mm 
- Apparent FOV: 40¼ 
- 60¼ 
- Real FOV: 2¼ 
- 1¼ 
- Exit Pupil: 4.1 
- 1.4mm 
- convenient view-through carrying bag