| Spherical Lens | Range of measurement：-19.00D～+16.75D |
| Step：0.25D (0.12D when 0.12D auxiliary lens is used) |
| Cylindrical Lens | Range of measurement：0～-6.00D(0～-8.00D when additiaonl lens is used) |
| Step：0.25D（0.12D when additional lens is used） |
| Axis of Cylindrical lens | Range of measurement：0～180° |
| Step：5° |
| Cross cylindrical lens | ±0.25D |
| Rotary Prism | Range of measurement： 0～20△ |
| Step: 1△ |
| Pupil distance | Range：50mm～75mm |
| Step: 1mm |
| Convergence adjustment | ∞，380mm( when PD=64mm) |
| Forehead Rest adjustment | 16mm |
| Vertex distance | 13.75mm |
| Dimensions | 335mm(Length)*320mm(Width)*90mm(Height) |
| Weight | 4.5KG（instrument only） |