Product Details：
On board Micro: bit interface, can be directly inserted and used
High quality joystick on board, with two analog outputs that can accurately locate the joystick position, and one digital output that can be pressed for control
On board battery holder and charging circuit, can be powered by rechargeable batteries, and can also be charged through USB
The onboard battery level indicator light flashes 1/2/3/4 times, corresponding to approximately 25%/50%/75%/100% of the indicated battery level
On board 4 color buttons, beautiful and comfortable to touch
Two side buttons on the board, corresponding to the A/B buttons on the micro: bit, for more convenient control
On board buzzer, can be used to play background music or game sound effects
Provide comprehensive documentation manuals (Micro: bit graphical routines/Python routines/user manuals, etc.)
Working voltage: 5V
Battery type: 14500 lithium battery
External dimensions: 150mm x 50m

Product Details：
Expansion board * 1