Through air vibration， bone conduction headset makes the sound transmits to external canal， eardrum， ear bone， ear tube and cochlear， then to the auditory nerves. While the Bone Conduction headphone conduct the speaker through the bone， it transmits sound to the bone near the external canal， then to auditory nerve. To avoid the occurrence of ear damage and hearing losing， the sound does not transmit through external canal and eardrum. The Bone Conduction headphone uses the advanced bone conduction technology， you can use it to answer the incoming call， listen to music， etc， and it is suitable for walking， running， climbing， skating， skiing sport， diving， etc. It will bring you a brand new using experience.<br /><br />Bluetooth Version: Bluetooth 4.0 + ERD<br />Frequency Range: 20 20KHz<br />Music Time: 6hours<br />Talking Time: 6hours<br />Charging Time: 2 hours<br />Standby Time: 10 days<br />Color: Black<br /><br />S.Wear Package List:<br />1 * Bone Conduction Headset<br />1 * User Manual