WIFI IEEE 802.11b /g protocol supports 20 MHz bandwidth in the 2.4 GHz band Bluetooth Bluetooth Low Energy subsystem, supports Bluetooth 5 CPU and storage 32-bit RISC-V single-core processor, up to 120 MHz, built-in 272 KB of SRAM (16 KB of which is dedicated to cache), 576 KBROM storage space Advanced peripheral interface And sensor 13 x GPI0 port Digital interface: 3 xSPl 2 xUART 1 x I2C host LED PWM controller with up to 6 channels Universal DMA Controller (GDMA), 1 receiver Channel and 1 send channel Color: Purple Material: PCB Package Contents: 1 x Development board 1 set Supporting soldering 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.