Sound quality very good, fit and comfort very good. However, the signals between the phone and the headset (e.g., the "voice dial" beep) were inconsistent - sometimes there, other times not. After about a month, it wouldn't turn on. After recharging, it worked, but after trying to recharge again, it wouldn't charge, and it wouldn't turn on. Great response from Amazon to replace it. Hope the second one is better than the first.