Pros: Long battery life and it will tell you when an approximation of the battery life remaining. You can answer a call by speaking the word 'answer". The call clarity is high.
Cons: You have to press the button on this thing for 3 seconds. Imaging pressing your finger into your ear for that long just to make a call. My previous BT headset was a button press. I know that most are. This was not an improvement. Noise cancellation is ineffective. I came to a stop and my brother asked if I was still there because the road noise was gone :( Battery life goes from "you have more than two hours".. to dead. Very poor incremental estimation.
Summary: I love the look & quality of this earpiece, but I fight like he-ll to keep it in my ear, I'm in my car & talking constantly so I need a good secure earpiece. The clear rubber spacers haven't helped either. Too bad, as my last earpiece from Plantronics lasted 4 years, that's why I came back to them. Very disappointed.