4GB Sport Waterproof Mp3 Music Player with Headphones Fm Radio for Swimming Diving Surfing Skiing Biking 4 Gb 100% Water Proof (Pink) This item is a waterproof MP3 player & FM Radio designed for swimming, diving and other underwater sports High durability aluminum casing with anti-scratch. Stylish design with fluorescent holder to strap onto swimmer goggles. USB rechargeable battery, it can work for 8 hours when fully charged. Compliant with international IP*8 water resistance standard.