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Sport Open-Ear Headphones, Wireless Bone Conduction Headset Bluetooth 5.0 Waterproof Sweatproof Earphone with Mic Simple Necktie Tie the product is more inFeatures: Bone Conduction Technology&High fidelity As we all know,sound travels faster in solids than air. earphone adopt the advance bone conduction technology which transmit sound to your auditory center through the skull instead of air. Maintain the fidelity of the sound to the greatest extent. Bone conduction saves many steps of sound wave transmission,can achieve clear sound reproduction in a noisy environment and notice the approach of cars and