Samsung HLT5687SAX 56-Inch Slim LED Engine 1080p DLP HDTV 56" LED light engine DLP HDTV 1920 x 1080-pixel resolution; 10,000:1 Contrast ratio Measures 50.4"(W) x 34.9"(H) x 14"(D).; 69 Lbs Samsung has confirmed there is no difference outside of model number suffix. Customers may receive HLT-5687X-XAA or HLT-5687SAX models.