Bone conduction waterproof headphone

Bone conduction and waterproof. That means usable for swimming. The design is specially made so that the bone conduction ball can be secured directly under the swimming goggles. You won't notice it while swimming while you can enjoy your favorite music for hours. To do this, see your MP3s on the 32 GB hard drive of your headphones. Or switch via Bluetooth to your phone that you take with you in your swimming buoy. There is no better swimming experience imaginable. Easy charging via USB.