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: 10°C~+50°C Operating temperature: -5°C~+40°C 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: 8GB 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. 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. 3 Meter underwater, IPX8 stantard. Perfect for Swimming/Running/Surfing/Sport. 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. DESCRIPTION: This is 100% IPX8 waterproof MP3.