Underwater Audio Swimbuds Flex Waterproof Headphones (Wired 3.5 mm Jack) Flex waterproof headphone: Designed for active lifestyles Flex's innovative memory wire can form the headphones around your ear for the perfect fit Headphones include 4 different styles of earbuds! Different earbuds work for each athlete. Find the fit that works for you. Rugged construction includes better materials, stronger cords, improved design and a full 1 year warranty. Third Generation Hydrobeat TM sound These waterproof headphones have an interchangeable earbud tip system (Fits HydroActive, Flex, and Swimbuds Sport headphones). This interchangeable earbud tip system has been raved about by customers and has received hundreds of positive reviews since its launch. Earbud tips provide a more secure fit, prove easier to switch, and are more comfortable to wear than traditional earbud tips One Year Warranty