Sony Ericsson MH-500 Bass Reflex Headset - Original OEM - Non-Retail Packaging - Black Take your phone calls or listen to your favorite music in stereo with this hassle free headset. the MH-500 you also get superior audio quality on the fly wherever you may be. the inline microphone and one touch controls keeping your media and contacts managed during your day has never been easier or sounded as good. The Sony Ericsson MH-500 Bass Reflex Headset, manufactured by Sony Ericsson is compatible with the Sony Ericsson Vivaz OEM Sony Ericsson Part Numbers: MH-500 / MH500