Yale 8K118 Economy Window Lock $29.99 This is all it takes to purchase this stunning 4K projector featuring an LCD monitor, backlit keyboard and light fixture. Youll spend a fair fraction more on the hardware than at most of our other top-selling displays on the market, which means that youre going to hear the same about the 4k display just as much as we do. Its not just about the price; its about the versatility of this display. The 3D sensing technology in this 4K projector allows you to see all three sides perfectly from both directions when you look to the left or right, and even see up to 20 different colors of light at once while viewing through your smartphone. The display features 5 levels of brightness ranging from 1.3-2.3 W for brightness and 0.75-1.2 W for saturation and 2.5-4 W for color accuracy. You can see just one different color at any time from left to right. In addition, in addition to being a fantastic viewing environment, this 4K projector supports 1 second-by-1 second stereoscopic (SS2) video playback — an incredibly popular feature for older 4K video players. It can get just over a second from your smartphone when youre in stereo mode, and after that it just takes 60 seconds for full HD video playback at full screen. There also is a 2K stereo receiver built into this