The H2O Audio Tri Pro Multi-Sport are waterproof, bone-conduction headphones that let you hear your environment and your favorite audio. They have a built-in MP3 player that lets you load music ...

They have a built-in MP3 player that lets you add music so you don't need a Bluetooth connection The H2O Audio Tri Pro Multi-Sport are waterproof, bone-conduction headphones that let you hear your ...