Bone conduction headphones are nothing new. Many folks use them to get a more convenient listening experience than regular headphones. The Sound Band Headset is another interesting replacement for good old ear buds. It is a wireless headset that does not use speakers. Instead, it relies on surface sound technology to help you hear while your ears are left open to the world.
You can make phone calls, listen to music, hold video conferences, and do a whole lot more with a solution like this. Sound Band looks quite decent and is more than capable of replacing regular ear buds. The project was fully funded on Kickstarter.