Summary: I bought this since I loved my wired earbud headset for my non-bluetooth phone. The call sound was great on both sides, but the earbud was too big and became uncomfortable quickly. The larger issue was the on/off button on the earbud. Not only would the design have been better to put this on the speaker clip, but this is the same control for synching and will switch to that if held too long. This was a problem while trying to turn off the headset during a call.