| Specifications | |
|---|---|
| 19 Various lenses ranging in power from 0D to ±20D | 0D, ±1D, ±2D, ±3D, ±4D, ±6D, ±8D, ±10D, ±15D, ±20D |
| Aperture | Small aperture, Large aperture, Red-free aperture, Slit & Fixation aperture. |
| Electrical Needs | Two AA alkaline or Ni-MH batteries |
| Bulb Type | P2000 (2.5V 1.6W) |
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