2.4 GHz dual-mode Wi-Fi and Bluetooth development board with 4 MB of flash. Compact and powerful. Supports LWIP protocol and FreeRTOS. Features three modes: AP, STA, and AP+STA coexistence mode. Compatible with NodeMCU and MicroPython. Can be programmed using the IDE and Lua. Designed to fit on a solderless breadboard for easy development. The 2.4 GHz Wi-Fi and Bluetooth dual-mode chip uses low-power 40nm technology, offering excellent power efficiency and RF performance, ensuring safe, reliable operation and easy integration into various applications. Color: black. Material: plastic and metal. Package contents: 1 x Development Board. Only the items listed above are included; other products are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1-3 cm.