0.25mm nozzle, clear PETG, Prusa, 6mm standard headphone jack, upcycled broken bluetooth headphones, three times larger battery, snap fit with no hardware, FreeCAD, 2nd print iteration, listening to it now, no tricks - it holds together firmly and is usable and actually sounds better than the original by a long shot from better headphone drivers I guess or proper soldering, oh and power button built into the flex of the design, OC only posted on Lemmy
It’s the guts of a pair of headphones, retrofitted with a battery and audio jack. Consider it a Bluetooth audio receiver and DAC with standard audio output.
Based on the post, I think it already had a LiPo charge unit on the board and they just slapped a higher capacity battery on it? Still hella sweet.