5 but the 5 was only $16 so I tried my luck. Better looking than Versace lol! They absolutely look like I am wearing earrings for pierced ears. a couple of short single presses to the multifunction button on the right ear bud to increase volume and all set. I bought these in a size 4 and couldnt keep my feet in them (the same as a womens 5. My son was very excited to get these. This does the job well. I left a bad review, saying it wasn?t sturdy at all. 5mm Xbox 360 headset cable. Also, though you can still see the rhinestones, the black on black makes the look a teeny bit more subtle than the peach pair, though they still have a snazzy, fun sparkle.