Thread: What's with the headset icon on the status bar of my k550i phone?

The icon looks like a headset, but i have nothing connected to my phone. I've checked all the obvious places, but can't seem to find anything that would turn that on. Its really irritating because the icon keeps flashing on and off, which is really killing my battery.
My phone is a Sony Ericsson k550i
Thanks for the help in advance
It's neither Bluetooth or infrared thats the issue.

It could be bluetooth, since it is draining the battery, but it doesnt look like a headset.