This 53" Progressive Scan projection TV represents the finest in digital technology, producing the sharpest projection TV viewing possible. Features include Digital Convergence and A.I. Home Theater modes, built-in surround sound, wireless sound delivery and other performance features to produce the most incredible dynamic sound system ever created and sharp, life-like picture resolution, theater-quality sound and easy operation. Special features include the Exclusive Hitachi Flex Converter that provides: 1080i HDTV Capabilities (with Set-Top Box) and Full Time Progressive Scan (480P), Built-In High Contrast UltraShield, First Surface Mirror, Dolby Digital 5.1 and Pro Logic Surround Sound and Digital Window Plus Picture-in-Picture Menu.