Recommendation for waterproof earbuds/earphones

[TorviShieldMaiden]

I want to get DP some earphones/buds to use while swimming for his birthday. He has an apple watch, so would need to be compatible with that. Does anyone use them and have any recommendations?

From what I've read, Bluetooth headphones aren't suitable for swimming because Bluetooth can't carry through water, so I think you'll struggle to find something compatible with Apple Watch. From some research I did a couple of years ago (so may be out of date now) the Aftershokz Xtrainerz were some of the best on the market. They work like an old school MP3 player so would need to be loaded with music or podcasts in advance. They use bone conduction instead of traditional speakers, so while the sound quality is different, if carries very well in the water as it's translated by vibrations in the cheekbone rather than in the ear, so not disturbed by water coming in and out of ear. As I said, I didn't end up getting them in the end and the market may have moved on, but if I wanted underwater headphones, I'd be looking for bone conduction.