Google’s ambitious and futuristic, augmented reality project - Google Glass  which has a pair of glasses with a (HUD) Heads Up Display is seeing  some new developments. As per reports about Google’s recent submission  of their FCC filings for the device, it has been revealed that the pair  of glasses will include bone conduction technology.
This technology will enable its users to  listen to audio without using any kind of earbuds or earphones.  Vibrations which can travel through bones near your ears are used to  transmit audio to your ears thus enabling you to listen to the sound  around you while you are also listening to audio from the glasses.
The FCC application includes information  about the device having 2.4GHz 802.11 b/g WiFi and Bluetooth 4.0. There  is also a description of the device having a reference to an “integral  vibrating element that provides audio to the user via the user’s head”  which points out that Google Glass will indeed use bone conduction  technology.

Google’s patent application featuring bone-conduction technology on the glass frame
A few weeks back, Google also 
filed a patent for indirect bone conduction technology based on wearable computing devices. Other manufacturers such as 
Panasonic displayed their functional bone-conduction technology based headphones  at CES this year which shows that some companies are developing devices  and improving their products based on this technology at a fast-pace.

Panasonic’s Bone Conduction headphones
We feel that though Google’s Glass  project is a bit ahead of its time, it will still pave the way for the  future of wearable computing devices as it has a host of innovative  features and will help its users to have all the information they need  right in front of their eyes. Google has also revealed that it will  release prototypes of the Google Glass for developers at $1,500.