| Angle of View | 45-/+5 |
| Work distance: | 50.5mm(from the patient's corneal to the aspheric lens) |
| Pupillary distance: | Adjustable from 52-74mm |
| Intensity of illumination | Stepless adjustable with the maximum intensity not less than 500Lx |
| Head Frame | 520-640mm |
| Depth | 85-125mm |
| Light spots: | Three spots, big, middle and small |
| Filters: | Three filters including red-free, colorless and cobalt blue |
| Teaching mirror: | Coated mirror with both sides viewing |
| Power supply of illumination: | LED Rechargeable Li Battery DC7.4V |
| Electric safety standard: | GB9706.1-1995 Class II,type B |
| Main unit's dimension: | 142X48X128mm |
| weight: | 700g |