1. Model: 21.5-inch display all-in-one machine

2. Configuration: * * A 5 megapixel camera in front of * * CPU: RK3288,

Main frequency: 1.8GHz, memory: 4GB, storage device Nand flash: 16/32GB  Optional,

Display device 21.5-inch LCD, resolution 1920 * 1200IPS G+G, Bluetooth 5.0

Battery: button battery 3V CR2032;

Operating system: Android system;

Accessories: one power supply, two cable clamps, one camera hidden sticker;

3.  Purpose: for video playback and display

4. Display principle: signal is given through the main board and voltage is given by the small board

5.color：black/white