University Optics Orthos
| 18 mm | 12.5 mm | 9 mm | 7 mm | |
| Format | 1.25" | 1.25" | 1.25" | 1.25" |
| AFOV | 45 deg | 45 deg | 45 deg | 45 deg |
| Eye relief | 12 mm | 9 mm | 7 mm | 5 mm |
| Weight | very light | very light | very light | very light |
| Price (new) | $56 | $56 | $56 | $58 |
| Price (used) | $50 | $50 | $50 | $50 |
GOODS: Price, Fantastic contrast and sharpness
OTHERS: AFOV, eye relief