Bone conduction technology
Bone conduction headphone works like a human ear. Human ear receives sound signal and converts them into vibration to communicate with our brain. But this headphone doesn't release sound, instead it releases some vibrations which can be understood by our brain. This device is made wireless using Bluetooth technology. Peoples who lost their hearing capacity can also use this headset. You don't need to wear it like a traditional headset. You can hear the sound wearing it anywhere around the ear. Regular headsets use air medium to transmit but bone conduction headphone uses our bone / tissue as a transmission medium.
Panasonic bone conduction headphone
Price - less than $300
Panasonic launched a new headset to tell people, the headset can also be another form of expression. Already Aftershokz have released their speaker-less headset priced at $69.95. The cost of Panasonic headphone was not revealed. But I expect it must be less than $300. The specification will be like a conventional headphones that we currently use. They have made changes in technology but not the sound quality. These headphones are not designed for music lovers. Now it's in a developing stage and soon we can expect improvement in audio quality.
The biggest advantage of this new headset is we can also clearly hear the sound of the surrounding environment. You ear remains uncovered as you are not going to fix this headset on your ear. At the same time you can listen to music and hear the sound surrounding you. This headphones will be suitable for bikers, sports man etc. Headphones sometimes causes pain in the ear hole and this can be avoided using it. Medical research says that this headphones won't damage your ear drums because you are hearing the sound directly to your brain without using ear drums.
Also See: Health hazards of using Bluetooth headsets
It also has technical advantages like it consumes less power. Just a AAA size battery is enough to deliver the power needed by bone conduction headphone. Battery backup will be more while comparing to the normal Bluetooth headset.
This headphones has drawbacks like you cannot listen to audio while you are working in noisy environment. It is because your ear is more powerful than the headset. Soon they will work on this to rectify the drawback. Another drawback is you can't expect high music quality.
Other speakerless products
Kyocera's Speaker-less Smartphone: Kyocera's a Japanese company has released a speaker-less smartphone with same function of bone conduction headset. For example: While playing songs in this mobile, you need to take this mobile closer to your ear to listen the song. As already said the battery consumption will be low. This mobile uses a vibrating oscillator to generate vibration and this vibration can be recognized by our brain.
AfterShokz Sportz 2: It is a wired bone conduction type headset. This headset is now available for sale. You can buy one from the link below.