The stream pro is the nest generation stream mp3 player with bluetooth - with offline streaming music (Playlist+) and it works with bone-conduction and waterproof in-ear headphones. The new Patent Pending Playlist+ features allows you to bring Spotify, or any streaming music underwater, on the trail - without your phone! Manage all your music with the H2O Audio App - free Apple and Android. H2O Audio patented technology detects the swinbud headphones and optimizes the sound to match your headphones. The waterproof mp3 Dual Mode technology allows you to use any SURGE headphones - including the new SURGE Bone Conduction Underwater headphones. Headphone Connection with Seal-Tight Headphone Jack: When combined with H2O Audio Surge headphones - the patented Seal-Tight headphone boot will keep your headphones securely in place - and most importantly the jack stays dry and clean. The Seal-Tight connection will reduce any long term corrosion. Manage your music wirelessly with the H2O Audio app - create folders, rename files, add music to your Playlist+ all without the need of a computer. 360 Snap-Clip: Improved clip that is stronger and has more bite! Rotate the clip to find the best angle for your needs. Combine with your favorite headphones: Compatible with any H2O Audio headphones.