AfterShokz Openswim MP3 Waterproof Headphones

From Shokz

With AfterShokz Openswim MP3 Waterproof Headphones you can now have music when you swim as well as when you run. These bone conducting headphones sit outside the ear so you can remain aware of your surroundings at all times. They have the best audio quality for bone conduction technology on the market which means there's no need to compromise on sound, even when you're underwater. The built-in MP3 Player has a 4GB memory which can store up to 1200 songs and an 8 hour battery life will see you through those long training sessions. The versatile and secure fit will ensure comfort, even when worn with swim caps, goggles and ear plugs.

Manufacturer's description, supplied via the retailer feed.