Sports & Swimming Waterproof IPX8 Neckband MP3 Player EBO Electronics with 8GB of Storage and Radio FM Neckband MP3 Player With Built-In Headphones - Supports MP3 and WMA Music Formats Waterproof Rating IPX-8 For Submersion Up To 3 Meters (10 Feet) - USB 2.0 Compatible For High-Speed File Transfer - Works with Mac and Windows. Designed For Water sports - Operates On Rechargeable Battery, Up To 10 Hours of playback time for the MP3 Player or 3 hours for the radio Compatible With Swimming Goggles - Includes Two Sets Of Ear buds: Water Use and Land Use High-Fidelity Sound Reproduction - Dimensions: 4.9 x 4.7 x 1.2" - Weight 0.07 lbs.