5 Standard Apertures.
Small spot, large spot, red-free filter, hemispot, Fixation aperture.
- Available with AA alkaline or Ni-HM batteries. Bulb power: 2.5V, 1.6W
- Smart design and comfortable operation
- Suitable for small pupil.
- 19 lenses from 0D to 20D:0D, ±1D, ±2D, ±3D, ±4D, ±6D, ±8D, ±10D, ±15D, ±20D.