A 1/4" stereo female to 1/8" (3. I found these and they look similar and fit similar. Still secure and still sound amazing. Great qualiy, beautiful dusty rose color looks just like pic . When I compared them to the competition from b&o, bose, sony, sennheiser, the PX7 felt like I was hearing the real thing, then the others felt like modified versions, and returning to the PX7 was like coming back to the real thing. Buenas chanclas para ir a dar la vuelta casual, PERO debes de tomar en cuenta lo siguiente: no debes de meterlas al agua o mojarlas pues se empiezan a descarapelar, y otra cosa la más importante, no sé si fue casualidad, o el peso de esta misma pero hizo que unos huesitos del pie (falanges) después de meses de uso, se empiecen a juntar y a la larga eso te va a causar un dolor horrendo del pie al grado que al. Lets be honest with these earbuds. Love these slippers,just a little bit big on the end,but not an issue for me. Other then that, it was easy to setup and customize via Armory Crate. I was looking for something with a leather sole because I heard that it lessens static build up.