Parameters:
1. 19 inch LED display
2. The LED vision chart contains 45 kinds of charts
3. It can be hung or stand on floor use, easy to install
4. Pixel: 1440*900
5. Testing distance: 2~7m
6. Dimension: 56*15*45cm
7. Weight:8kgs
8. Power supply: 100~240V, 50HZ-60HZ