It was attached, and they ate a few years old, and I don’t see them anywhere on their website. They are similar to these ones but not exactly what you are looking for. Good luck searching

I have several pairs of anker earbuds, one wireless and one semi wireless (connected to each other, not the device). They either have a little control panel/remote with buttons connected, or you can tap the top or bottom of the bud with a bit of pressure to change certain things (next song/volume, ect)