This is a 3d-printed Walkman shell, made in PLA plastic. I tucked a Sparkfun Audio Breakout and an amplifier circuit inside, and wired a speaker up as the 'tape reel' that you can see on the cassette from the front of the Walkman. Powered with a 3.7v lithium ion battery, and rechargable, so I don't have to fuss with swapping batteries around! Buttons on the side of the walkman start and stop the music, and skip to next or previous tracks respectively. The idea is basically just that I can wear this on my belt and blast some vintage tunes to give my Star Lord costume a bit of interest on the ears, as well as the eyes!