This Sony 365 demo projector is the exact equivalent of the model 285 projector. It is native 4K, with a resolution of 2160 x 4096. i have used it only for demo purposes; the lamp reading shows 64 hours out of a lamp life of 6000 hours (at low setting.) At 1500 lumens it is extremely bright and can accomodate a screen ranging from 60" to 300" diagonal. The 365 has 2 HDMI inputs and powered zoom. It replaced a JVC X700 and when I first set it up, the picture quality improvement was immediately apparent. This is a state of the art projector at a great price.