Thank you for viewing this product from among many others. This time, I am listing the ViewSonic PX747-4K HDR High Brightness Projector. Thank you in advance. It seems that the Costco version of the PX727 model is the PX747. It's not just a different model number, but the lumen count has also been increased. I will also include a ceiling mount, so you can install it as soon as it arrives. In my subjective opinion, I don't see any dead pixels, but please understand that I can't say for sure that there aren't any. I am satisfied with the image quality even considering it as an entry-level model (subjective). I am listing this because I am changing my system. Please check for any scratches or scuffs that may have occurred during installation. Lamp usage time: 2426 hours The following is a description. The ViewSonic PX747-4K is a high-brightness 3500-lumen 4K UHD home theater projector that supports HDR. With a high brightness of 3500 lumens, you don't have to worry about the bright lighting in the room or the light from gaps in the curtains. It projects high-quality images and videos in a variety of environments, such as sports bars and events, as well as at home. The PX747-4K utilizes XPR technology to project 8.3 million pixels of 4K UHD resolution, achieving maximum detail. The PX747-4K also supports HDR. You can enjoy a comfortable movie experience in your living room at home. It supports two HDMI inputs and can be connected to a wide range of devices. The built-in USB power can also be used as a power source for connected dongles and devices. The PX747-4K's SuperEco mode boasts a lamp life of up to approximately 15,000 hours, significantly reducing the cost of lamp replacement and maintenance. Please check the following for product information. ■Product Name 　DLP Home Theater Projector 　4K 　High Brightness 3500 lumens 　UHD HDR compatible 　ViewSonic 　PX747-4K 　Accessories 　Main unit, power cable, remote control 　3840×2160 (True 4K UHD) 　Lamp life up to 15,000 hours (in eco mode) ・±40° vertical keystone correction / 1.2x zoom for ease of installation Official information is available here. https://www.viewsonic.com/jp/products/sheet/PX747-4K