New contoured design. Revolutionary Multi-Touch touch screen interface. Brilliant 3.5 inch widescreen display. Ambient light sensor and accelerometer. Built-in volume controls and speaker. Built-in Wi-Fi. Stores up to 1,750 songs. Stores up to 10,000 photos. Stores up to 10 hours of video or a combination of each. Up to 36 hours audio playback. Up to 6 hours video playback. Buy music on the iTunes Wi-fi Music store. Rent movies from iTunes to watch on iPod touch. Download games and applications from the App store via Wi-Fi or through iTunes. Surf the web, view email, more via Wi-Fi. For Mac and Windows.