I calld LG, and pressed whatever number for the parts department, which is a different company, whose phone system looped me right back to customer service. The guy I talked to was so darn clueless, it was a total waste of time. At the end of the day, he said that part is "not yet" available (the "yet" means absolutely nothing as he just assumed if it wasn't there yet it would be).
I lucked out and someone here kept the charger and sim card removal tool before returning the watch to ATT, so he sold it to me. I imagine wothout that tool, there is likely no way to open the back to swap sim cards, so if you lose it, you're in trouble.
I wish everyone had held on to their chargers and tools before returning the watch. I know I will if something happens and I have to return mine.
I was trying to get the LG guy to connect me to someone who could sell me one of the returned chargers, but he was absolutely no help in that, and really not authorized to do anything besides answering the phone, said there was no escalations department I could call and no way to rout my request to someone who had a bit more authority to help a customer in need.