Samsung LTN406W 40-Inch LCD Flat-Panel HD-Ready TV 40-inch LCD HDTV-ready active-matrix LCD screen with widescreen 16:9 aspect ratio; 38.9 x 29.1 x 3.4 inches (W x H x D) Incredible 600:1 contrast ratio, exceptional peak brightness of 500 candles/square meter, and wide (170 x 170-degrees) viewing angles Digital Natural Image engine (DNIe) performs noise reduction and detail and contrast enhancement for interlaced (non-HD) sources 22 ms response time for lightening-quick channel changes, 60,000-hour lamp life for years of use 20 watts total audio power; Virtual Dolby surround sound simulates surround sound from any two speakers