The circular expansion board with 24 RGB LEDs is expertly combined with the micro:bit main board, creating an impressive creative tool. It can be used as a timer with the built-in buzzer or as a colorful musical spectrometer with the built-in microphone. In addition, it has two external P0, P1 ports for redundancy, allowing more play possibilities by connecting multiple boson and gravity sensors. Using various paper pieces and acrylics, the board’s appearance can be customized with a variety of outfits, such as a red Chinese knot for Chinese New Year or a cartoon face for Children’s Day. Furthermore, you can add various Christmas or winter touches with costumes such as a snowman or Christmas tree Features Support USB interface power supply and direct use of power-bank power supply or USB computer power supply Support PH2.0 interface power supply and the battery box or lithium battery power supply are both OK 24 RGB single-line lights, 16 million colors free mixing Makecode graphical programming Onboard microphone and buzzer Leaded out P0 and P1 interfaces, and distribute with the connection line, support the boson expansion modules Ultra-thin volume,more suitable for wearable and strap applications