| Vertex power | range | +15D-20D |
| step |
0-(+-)10D for 0.125D(+-)
10D-(+-)15Dfor0.25D |
|
| Prismatic power | range | 4 prism diopter |
| step | 1diopter | |
| Cylindrical axis | range | 0 to 180 degrees |
| step | 1 degree | |
| Lenses accommodated | Diameter 20mm to 80mm | |
| Eyepiece focusing | -5D to +5D | |
| DC and AC | (DC)3V(AC)6V/3W | |
| Dimensions | 300x170x70mm |
| weight | 1kg |
| Power requirement | 110v/220v,60hz/50hz,AC30W |