ESP32-C3 OLED development board is based on ESP32C3FN4/FH4, which is designed and produced core boards. It has a built -in 4M Flash. It has two modes: WiFi and Bluetooth, Onboard ceramic antenna. Equipped with a 0.42 -inch OLED screen, and supports USB download. NOTE:This screen is different from Other 0.42 -inch screen. The starting point of the screen is 12864 (13, 14).Please pay attention before buying, you must not directly replace other 0.42 -inch screens Pin header colors are random,don't accept the specified color Colour:Purple Material:PCB Type:Without Cable Package Contents: 1x unsoldered development board 2x pin headers 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.