Low-power SoC equipped with RISC-V 32-bit single-core processor, clocked at up to 160MHz Support 2.4GHz Wi-Fi(802.11 b/g) and Bluetooth@ 5(LE) Built-in 400KBSRAM and 384KB ROM, stacked with 4MB Flash Adopting stamp hole design and on-board ceramic antenna, it is easy to integrate into the user-designed base plate Supports flexible clock, module power setting and other controls to achieve multi-scenario low power consumption mode Integrated USB serial port full-speed controller, leading to 15 GPIOs to flexibly configure peripheral functions With xSPl.1x12C, 2xUART, 1x12S, 2xADC and other peripherals Material: PCB colour: Blue Package Contents: 3 x Development Board 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.