Universal Type:
ERIZ750a, ERIW800, ERIK750, ERIW550I, ERIZ520, ERIW810I, ERIW300I, ERIW200i, ERIW580i, ERIZ310i

SONY ERICSSON W580/K750 hands free features Superior sound quality with extended bass and sound isolation. It can allow you to talk on the cell phone without holding the phone. You can use this hands free to talk via the microphone when you are walking or driving. When you plug the hands free into the phone, please push one side of the corn into the phone completely, then another one. If you want to pull out the earphone, you just need to press it down .The Optimal even-length cables will make you feel comfortable when you are using it .