DESCRIPTION: This is 100% IPX8 waterproof MP3. 3 Meter underwater, IPX8 stantard. Perfect for Swimming/Running/Surfing/Sport. It is designed specially for swimmer, surfer and the other enthusiasts, The materials of the shell is used for plane, also it can be proof corrade of seawater. The design concept is to create a portable music device that can be swimmers and other water sport athletes while keeping the impact on their athletic performance to minimum. USB2.0 High Speed Audio Format: MP3, WMA Built-in Rechargeable battery: 8hrs Continuous Playing Time : Win2000/WinMe/WinXP/Vista and OS8.6+and Linux 2.4.0 Storage Temperature: 10C~+50C Operating temperature: -5C~+40C Tips: 1. Please dry the mp3 player after your swimming to keep it more ; 2. Please turn off the mp3 player before you unplug the headphone; 3. Please keep the headphone jack dry before charging or transmitting data. Memory: 4GB Material: plastic colour: black Package Contents: 1 x Waterproof MP3 Player 1 x Pair of Waterproof Earphone 1 x Data cable 1 x Wiping Cloth Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.