The Elecfreaks sensor:bit for micro:bit is a micro:bit-based expansion board that expands all available IO ports on the micro:bit and is exported in GVS format, which can extend various 3V electronic building blocks, such as LED lights, light-sensitive, Steering gear, etc.
With an on-board buzzer and headphone jack, can the sensor-bit not only play external sound but also plug in headphones to listen to music.