I've been interviewing a lot of people via Skype recently. I like to pace around while I talk so I bought this lightweight $20 Bluetooth headset on Amazon. It paired easily to my computer (a Macbook Pro) and the sound quality is fine. I've made a point of asking the people I've been interviewing me if they can hear me clearly and they've all said yes. The manufacturer promises "up to 12 hours continuous talking time and 200 hours standby time with single fully charged in just 2 hours." It charges through a micr-USB connection (cable included).