Meet Buhel SOUNDglass: a pair of sunglasses with bone conduction technology. You will be able to communicate with others via Bluetooth. These are compatible with tablets, smartphones, and mp3 players. With these sunglasses, you can answer phone calls, listen to music without earphones, and communicate with your electronic devices while being able to hear surrounding sounds.
The Buhel SOUNDglass sunglasses feature bone conduction technology, a microphone unit, and speakers. They are water resistant and will have anti-scratch lenses. The battery life is good for 4 hours. Another interesting Kickstarter product.