MCU: ESP32-53 Tensilica Xtensa dual-core LX7 microprocessor Wireless transmission: Support Wi-Fi 802.11 b/g/n, Bluetooth V5.0 Programming environment: for Arduino-IDE, ESP-IDF, VS Code Onboard functions: button (Boot + reset), battery power detection 1004<br><br>Hign-concerned Chemical:None Type:Voltage Regulator Chip:ESP32-S3 Flash:16MB PSRAM:8MB The product appearance and printed words may vary depending on the batch, but this does not affect use. Colour:As Shown Material:Plastic<br><br>Package Contents: 1 * Programming development board<br><br>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.