Sylvania 6900DTD High-Definition Terrestrial Set-Top Box/DTV Receiver Set-top box/tuner for viewing digital broadcasts on HD and EDTVs Converts digital broadcasts to analog signals for standard TVs Letterbox, zoom, and full output modes for 16:9 and 4:3 monitors Dolby Digital audio for ATSC; SPDIF output for home theater connection Measures 14.17 x 2.95 x 12.99 inches (W x H x D)