I’ve only had these slippers for 2 months. The USB-C charging matches what I use for my phone so I dont need to keep track of yet another cable. I needed a secondary charging cable for my PowerBeats earbuds, and was pleasantly surprised at the price and quick shipping on this item. Exactly like a wired mouse. My gut was right once again. Tried splitting the difference, Just looks cattywampus! The refurb option is very inexpensive. I don’t know where these ones were made but the craftsmanship is noticeable. If you are here to get a backup for your better IEM, then I would probably suggest these. Like other Grohe products that I have purchased, I am very happy with the quality and design of the installed product.