Compact Design: perfect for embedded systems and IoT projects, the development board is small, making it easy to integrate into tight spaces. Wireless Capabilities: Equipped with both WiFi and Bluetooth functionalities, the ESP32-C3 board ensures reliable wireless communication and connectivity. High Performance: Powered by the ESP32-C3 chip, it tackles demanding tasks efficiently, suitable for advanced users and developers. Please note that, in case of port instability leading to disconnection, you can identify the issue by the sound of the port. Due to different batches, there may be differences in product appearance and printed text, which will not affect use. Colour:Black Material:PCB Package Contents: 2 x Development board 4 x row of pins 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.