Summary: This has a lot of potential, but they went overboard with their technology to the point where it gets in the way. For example, when on a call, if you hit the mute button on the headset, you get a voice prompt and a beep telling you that mute is on or off.
Summary: I have a bad shoulder. Lengthy cell calls can be cheap but painful. Another problem with regular Bluetooth devices was the people would have a problem hearing me. The C720 Headset eliminates these problems.
Summary: After struggling with cheapo headsets I opened my wallet and went back to Plantronics. I have used several Plantronics headsets over many years. I don't understand the need for a cord on a wireless headset.
Pros: Stereo Headphones Clarity of Sound Smart Sensor
Cons: Stupid Cord & Dongle Proprietary Micro USB Cable
Excerpt: I've been using a C720 for a few months.
It works great for Lync, and my iPhone over Bluetooth. Battery is great for those who need a good comfortable headset when they travel. I've used with iPhone, and Galaxy phones.