I don't understand all the positive reviews for this product. Let me list its deficiencies:* The light is too bright at night and too dim during the day.* The power button is almost impossible to press.* It rattles when I drive.* I have to shout for it to understand my voice commands.* The other person can't hear me when I turn my head.I was wondering what I was missing with my old Plantronics headset. But the T305 makes the headset seem pretty darned good. I guess that's something.