Nokia has launched the Nokia BH-310, a car-centric, 12V-cradle-powered Bluetooth headset designed specifically for road warriors. The headset is always charged, you can pick up calls by removing the BH-310 from the cradle, and is billed as having "amazing audio quality". Although compatible with all Nokia phones, there's also instant pairing via NFC if your phone has Near Field Communications (e.g. Nokia C7, 808 PureView, 701, 700, 603, N9, Lumia 610 NFC).

From the short launch piece:

With two microphones and Digital Signal Processing, the Nokia BH-310 has superior noise suppression and echo cancellation – making sure you can hear and be heard despite any background noise.

Fast charging, long stand by time and a complete in car calling set means that there’s no hassle if you make frequent journeys. And with Nokia’s  “Always Ready” feature you can answer calls by simply picking up the BH-310 from the holder, and end them automatically when you put the headset back.