1. Onboard for interface, which can be directly inserted for use 2. Onboard high-quality joystick, two analog outputs, which can accurately locate the joystick position, one digital output, which can be controlled by pressing 3. On-board battery holder and charging circuit, can add rechargeable battery for power supply, and can also charge the battery through USB 4. On-board battery power indicator, flashing 1/2/3/4 corresponds to about 25%/50%/75%/100% power 5. Onboard 4 colored buttons, beautiful and comfortable I am a gamepad expansion board specially designed for . It is similar to the shape and key design of a handheld game console. It can , can be powered by batteries, and can also charge rechargeable batteries. Bring , use your ingenuity, and your own handheld game console. There are 2 side buttons onboard, corresponding to the buttons on the for , which is more convenient to control Onboard buzzer, can be used to play background music or game Working voltage: 5V Battery type: 14500 lithium battery Dimensions: 150mm x 50mm Source: http://..net//Joystick_for_micro:bit Colour:blue :PCB+Metal Package Contents: 1 x Joystick for 1 x 14500 lithium battery 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.