First time I bought this to pair up with my jabra a210 bluetooth adapter.  Worked fine, except that the vibrate feature won't work.  Then I exchanged it for another one.  This time the vibrate works, but the call pickup button would not work.  It works for power up/power down.  But I can't pickup any incoming calls.  The button simply wouldn't work for that functionality.  I tried it with few phones and it doesn't work.  I already exchanged the jabra adapter once.  Now I'm sick of exchanging it.  I think jabra has bad quality control.  Someone in the quality control shd be fired!  Everytime you exchange something, you run into a new problem.