Enjoy TV programs on the go. The built-in ATSC tuner can receive over-the-air digital broadcasts. You can connect your digital media player to watch video clips or digital still via the USB port or insert a miniSD memory card to view digital photos. The A/V input connects to external devices, such as a DVD player or cable/satellite box. Includes high-capacity lithium-ion rechargeable battery for long playing time. Note: You must have a source of HD programming in order to take full advantage of an HDTV. Otherwise, the picture quality of an HDTV without an HD source may not be much better than that of a standard-definition TV. Please contact your local cable or satellite TV provider for details on how to upgrade to HD programming.