Mores code oscillator. Built using the Future kit FA938 or FK938 Board. I got the 9v battery connector and speaker from Amazon. You will have to do a little soldering with this project, more depending which kit you buy.
Speaker https://a.co/d/00gYQRdZ
9v battery connector https://a.co/d/0bXil2jl
PC board https://www.futurekit.com/en/product/34267-56994/fk938