Technical Specifications
| PARAMETER | SPECIFICATION |
| Illumination | large light spot、small light spot、slit、central-net、Redfree filter. |
| Diopter compensation | 0、±1D、±2D、±3D、±4D、±5D、±6D、±8D、±10D、±12D、±16D、±20D、-25D |
| Light source | 2.6V、1.6W Mini-halogen lamp |
| Power supply | DC 2/5 tafferies OF A/1.5V |
