1. The main control chip adopts ESP32-S3R8 Tensilica Xtensa dual-core LX7 microprocessor 2. The chip supports Wi-Fi 802.11 b/g and Bluetooth 5. 3. The screen uses a 2.8-inch ST7701S TFT LCD full-color display. MCU: ESP32-S3R8 dual-core LX7 microprocessor Wireless communication protocol: Wi-Fi802.11, BLE5+BT mesh Programming platform: for ide, VS code Onboard function: PSRAM: 8 MB Flash memory: 16MB TF card holder boot button, reset button Battery voltage detection: IO04 2.8 inch ST7701S IPS TFT LCD monitor: Resolution: 480 x 480 RGB full color Interface: 3-wire Spl+18-bit rgb interface Driver phone: ST7015 Display type: 28-inch TFT LCD display Colour:black Material:ABS Size: 7.3 x 7.59cm Package Contents: 1 x T-RGB LCD Touch Circular Display 1 x Battery cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.