Great invention one Conduction Headphones are designed to transmit sound through vibrations in the human elease both ears and help people with hearing loss.ComCompatible Withtable and Safe:The Bone Conduction Headphones using bluetooth 5.0 wireless connection, don't need to cram in ear ,you can hear the music and answer the Phone, and your ears can hear the sound of the surrounding, very safe.Usage Scenario: Bone Conduction Headphones are sturdy and sweat proof, suitable Compatible With running, cycling, fitness, hiking, rock climbing, and driving. Antiperspirant Design can protect the ear.Product Configuration: Built-in 200 milliampere lithium battery takes two hours to be fully charged tandby Compatible With 7 days listen to music or answer the phone Compatible With 5 hours, connection distance is about 10m.Product name: Bone conduction bluetooth headsetWaterproof level: IPX4colour: blackMaterial: PVCSize: 15x11.5x5cmPackage Contents:1 x Bone Conduction Headset1 x USB CableOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.