I have been using wired earphones for my 4X HD for a time (i broke the originals earphones and i guess my sony MDREX50 will broke soon) so i'm looking for a bluetooth earphones.
You could buy the Sony DR-BTN200. I know that it is a headphone, but I bought it for €70 and it is compatible with my PlayStation 3 to use as a headset.
And you can use it of course to listen music
I have been using wired earphones for my 4X HD for a time (i broke the originals earphones and i guess my sony MDREX50 will broke soon) so i'm looking for a bluetooth earphones.
I'll look for sony ericcson mw 600 but it's hard to find in my country (amazon doesn't have it) and iodak I choose in ear headphones because i used to listen music with my phone and i like to have them in my pocket