This is the first portable combination HDTV and DVD player. About the size of a compact netbook computer, the device has a sensitive external antenna and digital tuner that receives standard and high-definition broadcasts (up to 720p resolution), then optimizes the signal for display on the 7" TFT display. The vivid, true HD 16:9 aspect ratio display provides 480 x 234 resolution with 400:1 contrast ratio for clear, sharp pictures. The built-in DVD player supports DVDs and CDs, so you can watch movies or listen to music. Its headphone jack enables silent listening. It has a built-in memory card reader (supports SD/MMC/MS) that allows you to easily view photographs or videos from your camera or camcorder. It is also equipped with a USB port that allows you to upload pictures. A weak digital broadcast signal will result in no picture, unlike older analog TVs that presented a poor picture. Its rechargeable battery provides up to two hours of HDTV viewing (2 1/2 hours for DVDs) from a 2 1/2-hour charge using its included adapter. Open 10 1/4" L x 5 1/2" D x 9" H. (3 lbs.) Unavailable in Canada as the country does not broadcast digitally at this time.