Some people just can’t exercise without music. If this is your case and your favorite sport is swimming, here is a product you should consider. The Dolphin Lite Waterproof MP3 Player ($89), developed by Nu, focuses on absolute comfort, which is the most essential element during effort. The Dolphin Lite has been designed to fit easily and securely around your head, eliminating unnecessary wires. With its quick-charge feature, the Dolphin Lite Player can hold up to 120 minutes of playback time with only 5 minutes of USB charge. Charge it for 2 hours and you’ll enjoy 18 to 20 hours of continuous play!