Works great with both large and short pin female connectors.
Works well, just one issue: I hoped to use it with KBear F1 earphones, but the way the wire is bent it always pulls the earphone out of my ear. A hair dryer does not re-form the shape on these. I've been able to make it almost right using bent up paper clip wire, but I haven't been able to make it quite comfortable with the F1s. It would probably work way better with more traditional ergo-fit shape earphones. Do note that like all TWS adapters on the market today there's a slight hiss. Sensitive earphones like Shure SE846 will make this so loud as to be annoying and distracting. With less sensitive ones like KBear F1 it isn't audible at all and they'll sound pretty much identical to how they do on a standard wire. ...So sorry I didn't confirm goods received when it came.