[Powerful CPU] Seeeduino XIAO carries powerful CPU ARM Cortex-M0+ 32bit 48MHz microcontroller (SAMD21G18), which is three times than for Arduino Uno and for Arduino Nano. In addition, for this Arduino IDE compatible board Xiao is also equipped with 256KB flash memory and 32KB SRAM.     [Rich Interfaces in a Tiny Size] There is 14 GPIO PINs, which can be used for 11 analog PINs, 11 digital PINs, 1 I2C interface, 1 UART interface, and 1 SPI interface in such a tiny size - only 20mm x 17.5mm (as small as your thumb). Seeeduino XIAO development board is for the smallest Arduino compatible board in the Seeeduino series.     [Fully compatible for Arduino IDE] The Seeeduino XIAO development board is perfectly compatible with Arduino IDE, you can easily develop some small projects with the help of the large and comprehensive for Arduino library. As it has a 2.54mm pin pitch, it is for an Arduino microcontroller that can be used even when inserted into a breadboard.     [USB Type C Support] Seeeduino XIAO supports the USB Type-C interface which can supply power and download code. There are power pads at the back of the XIAO which support battery and make it designed for wearable devices to become realistic.     [Perfect for Wearable and Tiny for Arduino Projects] On the other hand, this little board has good performance in processing but needs less power. As a matter of fact, it is designed in a tiny size and can be used for Arduino wearable devices and small projects.          colour: black     Material: plastic          Package Contents     3 x Seeeduino XIAO - for Arduino Microcontroller - SAMD21 Cortex M0+     6 x 7pins header     12 x pasters          Only the above package content, other products are not included.     Note: Light shooting 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.