h2o audio is the world�s leading watersport music company, providing waterproof cases, waterproof headphones, waterproof headsets, and waterpoof armbands designed to support a diverse range of mp3 players and music enabled phones (including apple iphone, ipod touch, ipod classic, ipod nano, and ipod shuffle). perfect for any water sport be it swimming, triathlons, water aerobics, water exercise, snorkeling, scuba diving, surfing, paddle surfing, stand up paddle, wakeboarding, kayaking, kiteboarding, windsurfing, or snowboarding