Summary: Voice activation features seem poorly integrated with Android. A simple double-tap on my old earpiece would get me to voice features on my phone. Seems like I have to do a dance of some kind to get that to work on this piece. More often than not it decides to start playing music instead. Annoying.
Pros: The earpiece fits nicely and is comfortable in my ear. Sound quality is excellent, as is the microphone quality...I call my slightly deaf father often, and for him, going from my old LG to this Plantronics model was night and day. Paired easily with my Samsung Galaxy 3.
Cons: The apps that they recommend you install with the earpiece do little other than add a visual connection indicator to my phone. Oh, they do spam me occasionally to subscribe to paid services, le sigh.
Pros: Very comfortable, clear call quality and a good range (best I've had so far). Easy to manipulate controls while its in your ear and great battery life. Really I have no complaints about the hardware
Cons: The software on the other hand needs some help. The app is poorly designed with little functionality. But I didn't it for the app.