German Jimmy (GIMMI) HD projector how?

The real German Jimmy GIMMI is certainly good, / sold German GIMMI projector, advertised that the original German manufacturer, 1500 lumens, contrast ratio of 1200 to 1, resolution of 1920 * 1080, in the LED projector is not bad, 799 yuan is very attractive, I am trying to buy a cheap. A look at the manual is out of Chengdu, 400 lumens, contrast 300 to 1, the projection area of 20 - 120 inches, the heart of the cool power on a try, the distance of 2.5 meters projection area of only 18 inches, and the brightness is very first, touch Hu's very, no matter how to adjust it is not useful to look for customer service, no one cared at all, it seems to be 2,000 yuan following the The basic no practical value