| Model | CHE-VS500 Vision Screener |
| Spherical degree DS | -7.5D~+7.5D;±0.25D |
| Axial position | 0°~180° |
| interpupillary distance | 35mm~80mm;±1.5mm |
| Detection time | 0.5s |
| Image Format | JPEG |
| touch screen | 3.97-inch TFT-LCD touch screen, 800*480 resolution |
| Confidence | support |
| weight | 560g |
| Cylindrical degree DC | -3.00D~0.00D;±0.5D |
| pupil diameter | 4.0mm~9.0mm;±0.4mm |
| squint | 0-20° |
| Detection method | Fully automatic |
| storage | Built-in storage 16GB |
| data transmission | USB2.0; WIFI; Bluetooth; wireless printing and other high-speed transmission modes |
| size | 105mm×118mm×200mm |
| power supply | DC3.7V/3400mA, rechargeable lithium battery |

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