Jabra - Sport Coach Wireless Earbud Headsephones - Blue Compatible with most Bluetooth-enabled devices Including a wide variety of cell phones and MP3 players, so you can stream music wirelessly up to 33' away while you exercise. Sweat-, shock- and dust-resistant design Provides durability for outdoor and active use. TrackFit motion detector Helps you keep track of your activity and performance. In-ear audio coaching Offers immediate updates about workout performance. The app provides a variety of workouts for any skill level (download required). Dolby stereo sound Delivers high-quality audio performance while you work out. Up to 5.5 hours of playback time On a full charge for extended use.