Default [Q] Problem with bluetooth headset


I have bought the bluetooth headset Plantronics Marque 2 M165 but i have a problem. The headset has brittle-sounding transmissions through the microphone. I have tested it with an another device (not the same model) and i found that there wasn't any problem, so i think that the problem is with my phone. Can you suggest me any solution?

Thank you in advance.