Chintek Mother's Day Gift CK-P4421W 4GB Swimming Diving Waterproof MP3 Music Player/FMRadio with Waterproof Earphones (Blue Black) IPX8 Level Compliant with international IPx8 water resistance standard,Max depth 10m/32.8ft Waterproof MP3 player & earphone designed for swimming, Spa and water sports Support MP3 WMA Audio format,FM Radio Function Built-in 120mAh #013430 Polymer rechargeable battery for long time use USB 2.0 compatible backwards with 1.1