| Measurement Method | Cornea reflection light coincidence method |
| Range of data display | Binocular pupillary distance: 44-83mm |
| Left or right pupillary distance: 22-41.5mm | |
| Effective range of measurement | Binocular pupillary distance: 45-82mm |
| Left or right pupillary distance: 22.5-41mm | |
| Indication error | ≤0.5mm |
| Rounding error | ≤0.5mm |
| The scope of the focus point | 30cm﹣∞ |
| Power source | Voltage: DC 3V, Specification: AA battery, Quantity: 2 Or 4 pieces |
| Time for automatic shut-off | 1 minute after stopping operation |
| Dimensions | 214mm(L)×150mm(W)×51mm(H) |
| Weight | 0.6kg |
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