Bone conduction headphones transmit sound by transmitting vibrations directly to the temporal.In addition to air conduction, bone can also transmit sound. The skull vibrates, sending the sound to the inner ear, which can also be heard. The bone conduction chip vibrates through the periosteum, transmitting sound to the headset. Leaky bone conduction headphones are common. If you mind, adjust the volume appropriately, then put on a memory earplug or plug your ear with your finger to experience the music brought by bone conduction. A New Way Of Hearing True bone-conduction headphones: Youll hear overtone leaky sound, but not external speakers. More safer to listen music outdoor sports Open ears also ensure the possibility of headphones in dangerous situations. Its safer to use. HD surround Stereo Restore real sound