This is the digital color TV small enough to slip into a shirt pocket, letting you watch your favorite digital broadcast programs on the go. It displays content on a 4 1/4" screen at 480 x 272 resolution for crisp images and sharp motion devoid of streaking or blurring. With a 16:9 aspect ratio and a generous 60º viewing angle, it allows adjacent viewers to watch programs easily. Two built-in 1/2-watt speakers deliver clear sound; a headphone jack allows you to listen without disturbing others. It has a built-in antenna that collapses back into the case; an included external antenna with a magnetic base can connect to the unit from 80" away using its cord, allowing you to place it for optimum reception. Reception of signal depends upon your location; lack of reception indicates a weak digital signal from broadcast station, therefore, a weak signal will result in no picture. The built-in lithium-ion battery provides up to 1 1/2 hours of viewing from a 4 1/2-hour charge using the included AC adapter. 5 1/4" L x 3 1/4" H x 3/4" D. (7 1/2 oz.)