Unkown bBlutooth Earphone

A friend gave me this earhphone and I found nothing about it or its manufacturer... The manual is lost and I have no idea how to work it.
I have a sony erricson k610i.
Any effort will be appreiciated..
Here's a picture:
apperantly I can't post links. So it can be found on imageShack and it's called: dsc00002hw4.jpg

Charge it,
pair it (power off then on button till red & blue flash);
search devices on phones bluetooth;
enter code 000 when prompted.
test it on your voice mail