They appear to be wireless based on the micro USB socket. I can power them up and get a blinking blue light, but my phone never sees them. I’m curious to find out the brand and was hoping that someone here might be able to help identify them.
UPDATE: Nevermind - I got them charged and paired, and based on the model number I’ve found that they are Modal HPBT101s. They can be found used on Amazon for $55. The reviews are OK, average of 3.5/5. Not bad for about $0.50...