回答“How do you fix the broken swivel part on them?”My daughter handed me her Sony headphones in 3 pieces, both legs of the swivel had broken off - SONY! whatever happened to quality control? Anyway, gluing was out of the question as fragments of plastic were also missing. On Amazon, I bought a pack of 'mouldable glue' by a company called 'Sugru'. The pack contains 8 Saches, each containing a piece of 'putty'. Before opening a pouch, I had to remove the broken legs from the dangling headphone - (carefully remove the earcushion, it has a tacky base which will hold the earcushion again on completion, remove the 4 Philips screws and lift the cover). Pushed the broken legs out easily. Placed one broken leg in position and moulded the putty around the joint. The putty is a silicone rubber and takes 24 hours to cure. Then did the other leg ditto. I'm positively surprised at the result, and still have movement of the earpiece. Thank you Sugru, and I hope this info helps others. Kind regards Kerry.