I am very disappointed in this bone headphone. It has a rubber cushion on each piece so that no sound is conducted to the bones.
I find them only useful as on the ear headphones. To be worn as designed it is necessary to have the volume up to full and then the sound comes out the sides and makes much noise - leakage for others to hear.
Too bad the most specialized company in bone headphones cannot get the basics correct for function.
No cables and still use your ears to listen.
I dont know why we can listen through our jawbone.
The sound is same as headphones.
I have owned mk1 Aftershockz for 3 yrs and they still work.
The only problem is they occasional sweat out in the gym or cycling, but dry out on the radiator quickly.
The new ones have not sweated yet.