1.Have digital noise reduction function 2.Lamptube Life: 50000hours 3.Luminance:450cd/m2 4.Contrast(Stable):3000:1 Specification: Model NO.EP742DName Information Distribution System machine FunctionDigital Noise Reduction, 3D Decoding, Color Optimization Technology, Widescreen Capabilities, Surrounding sound, Sleep timer, Multi-Function Remote Control Screen Screen Size42’’Screen TypeLED ...