X-pac Waterproof MP3 Player 4GB IPX7 Waterproof Compliant - 1 Meter Depth 4GB Storage, MP3 and WMA Compatible, USB 2.0 Interface Built-in Battery Provides 8 Hours Continuous Playback Per 1.5 Hour Full Charge Two Sets of Headphones Included: Waterproof and Normal Plug-and-Play Usage with Win2000/WinME/WinXP/Vista and OS X. Win98 Driver Included