Originally posted by: cbrsmurf
How is this bluetooth? The last one I bought was difficult for the person on the other end to hear without raising my voice significantly
I'd suspect that you problem was not with the headset per se. Perhaps the volume control on the phone was low, or you weren't speaking into the mike (or it was turned away from your mouth or smth. I've had my 510HS for a few weeks now and haven't heard anyone complaining about volume being to low (use it with cell phone and skype so far).