You can download the user manual from http://www.phonedog.com/cell-phone-research/lg-fusic-lx550_user-manual.aspx
That might answer your question.
The spec page on that side only says bluetooth yes. And that's not the answer to your query.
Hope this helps.
Does anyone know if the LG LX550 for Sprint is A2DP or AVRCP Bluetooth profile? I checked the CNET specs and all it said was Bluetooth enabled. I need to know in order to find a compatable Bluetooth stereo headset with microphone for talking and listening to mp3's.
Thanks in advance,