bluetooth headset

got this bluetooth earpiece yesterday...
its a HS805 from motorola
a part of a deal that turned sour actually..

its like this,
months ago i bought a bluetrek G2 headpiece to use with my nokia 6600(which i sold off)..
been only using it for a month and the mic decided to give me problems..
i sent it back tot he shop for a claim since its still under warranty..
5 months later(now) the thing has yet to come back from its claims..
had a small argument with the shop and they decided to replace it with this..
its great to use.. with a AAA battery as it power supply..

still, i suspect foul play with my old bluetooth earpiece! >:(