| Model Name | 2WIN-S |
| Commercial Name | Kaleidos |
| Operating Mode | Binocular / monocular |
| User Interface | Android application for tablets, providing remote control, live streaming, data management |
| Refraction Measurement | Automatic |
| Data Interface | Wi-Fi, internal microSD card & Bluetooth |
| Sphere Range | $\pm15$ D; in the range $\pm7$ D, step 0.25 D from $\pm7$ D to $\pm15$ D, step 0.50 D |
| Tablet Printer Interface | Bluetooth, Wi-Fi and email printing |
| Cylinder Range | $\pm5$ D, step 0.25 D |
| Tube Size | $119 \times 23 \times 15$ cm |
| Cylinder Axis | $1^{\circ} – 180^{\circ}$, step $1^{\circ}$ |
| Metal Stand Size | $45 \times 32 \times 21.5$ cm |
| Pupil Size | Automatic detection, 4-11 mm, step 0.1 mm |
| Max Height Operation System | 130 cm |
| Pupil Distance | Automatic detection, 30-120 mm, step 0.1 mm |
| Net Weight | 5.5 kg |
| Fixation Target | Built-in |
| Power | Rechargeable battery pack, 50 Wh |
| Acoustic Target | Built-in |
| Battery Charge | AC/DC medical power supply 18V, 40 W |
| Measurement | Patient – operator distance $> 1$ m |
| Hygienical Disposable Masks | Included |
