Pyle PSWP20BL Surf Sound Waterproof MP3 Player with Headphones (Blue) Attachable MP3 Player with Button Controls - Waterproof Rating IPX-8 For Submersion Up To 1 Meter (3.3 Feet) - Lithium Battery: 180 mAh - Frequency Response: 20Hz-20kHzW 4-GB Memory Audio Storage - Rechargeable Battery for up to 15 Hour Play Time - Signal-to-Noise Ratio: &gt;70 dB - Operating Temperature: 41F - 104F (5C - 40C) High-Fidelity Sound Reproduction - Charge Time: 2.5 - 3 Hours - MP3 Bite Rate: 8kbps ~ 320kbps Supports MP3 and WMA Music Formats - Technical Specs: - WMA Bite Rate: 32kbps ~ 192kbps USB 2.0 Compatible for High-Speed File Transfer - Distortion: &lt;0.1% - Frequency Response: 20Hz - 20kHz