The Envizen Digital Duo Box Pro is the new and improved version of the successful Duo Box. It is still the only entertainment system that allows you to watch TV, play DVDs, enjoy slideshow digital photos, and listen to music all on one device. However, the Duo Box Pro has a unique built-in internal battery that makes the device even more compact and portable than before. You can take this lightweight device with you traveling, on the airplane, to your office, or anywhere you want some entertainment. With the built-in ATSC digital tuner, the Duo lets you watch all available digital channels. Its portability and versatility, along with the vivid 7" screen, makes the Duo the only portable multimedia device you?ll need to own.