Aftershokz Xtrainerz Bone Conduction MP3 Swimming Headphones with Swim Cap - Waterproof Bluetooth Headset for Pool, Open Water & Triathlon Training (Sapphire Blue)

Impressive sound outside water, but sounds even better in the water. First time using bone conduction headphones, and was skeptical about the technology, but amazing how clear music is heard.Construction seems sturdy, but lightweight. Feels comfortable--nice wrap around the head and ears.Easy drag-and-drop process for loading files onto the storage, and with 4GB of space, plenty of room for ample selection of songs or other files to work out with or to listen to during whatever activity.A little pricy, but well worth it. Seems well-made, and has a 2-year warranty to back it up. I'd try other Aftershokz products.