Features: Brand new and high quality RP2040:bit Board is a pocket size microcontroller, ARM development board for youth programming education, only half the size of credit card (4cmx5cm). Can be used for various cool creations, such as programming video game, musical instrument, robot Control, scientific experimentation development, etc. The back of the Motherboards retains the RPi official interfaces, which can be suitable for various expansion board, and can also be suitable for Micro:bit module for compatibility. Base on the official RP2040 processor of RPi, onboards W25Q16 16M flash memory chip. Onboards 5x5 LED dot, each LED light can be programmed individually.There are two programmable buttons onboards, which can be used to control game or pause and skip songs in the playlists. Specifications: Material:ABS Size:Approx.4cm/1.57inch Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item. Package includes: 1 Set Expansion Board