In noisy environments, users can plug an ear to keep outside noise from drowning out bone-conducted sounds. The phone retails for ¥7,800 yen, or $73 U.S. But, the way you look using the phone is priceless.
The TS41 handset is the first to let users hear calls inside their heads. Developed by Sanyo, it carries a "sonic speaker" which generates vibrations that move from the skull to the cochlea in the inner ear instead of relying on the traditional method of sound hitting the outer eardrum.