KEEPTIME Portable Monitor 4K 13.3" 3840x2160 UHD USB-C HDMI Laptop Monitor, 100% sRGB IPS HDR Gaming Screen with Speakers for Laptop, Xbox, PS5, Switch, PC,

Super light and fantastic resolution! I totally recommend this portable screen

This little thing packs a lot of punch. The clarity is excellent. I got this for font editing because of the high DPI (331) and it delivers in that aspect very well. I also got it for photo editing and the high DPI is great for double checking the edit. If you set the scaling to 200% it's actually usable as a main screen for productivity apps like Photoshop. It's great for watching videos. At least in terms of picture quality- the speakers are not impressive but it has them if you need them. But the colors are amazing and I didn't even need to adjust the color profile, they were pretty accurate on factory settings. It works okay for gaming. There is some smearing/ghosting. The worst scenarios are when the scene has a lot of washed out grays, like in Dark Souls 3. You need to turn off motion blur in these games because the ghosting is already like motion blur. It was still playable but it was right on the threshold of what I would consider acceptable. I would definitely not play the whole game on this monitor. But in more bright games the smearing is hardly noticeable and the 13" screen is actually a great size for certain games like celeste and hollow knight. The form factor is nice. The magnets are strong enough that it doesn't slip. Construction feels solid. The kickstand keeps its angle and is sturdy. Overall I'm really impressed with this display for its price.

I could not get a video signal using USB-C. Tested with a DisplayPort to USB-C bidirectional cable. This cable works with another monitor I have. I suspect it does work because of the reviews. But the seller needs to provide details on the conditions. I also tried it with my iPhone SE and Motorola Android, got no signal, says this display. The HDMI works at 4K at full RGB (4:4:4) at 60Hz w/ 8bit color according to Windows 10. I like the rotary controls. It is quicker than the old push buttons. Rotate up gets you volume control. Rotate down gets you brightness control. Press and you get menu. The single button is to quit.

If you're used to the MacBook's “Retina” display's, you know how your eyes are spoiled by sharp, crisp text. The problem is that many external monitors don't match the built-in monitor's pixel density and quality. Text is fuzzy and this drives me crazy if you spend hours staring at code. When I looked for a portable monitor to use on the road in hotel rooms, a Retina-quality display was all but impossible to find on Amazon until I came across this KEEPTIME 4K portable monitor. I'm super pleased with the picture quality. So much so that I use it even at home now, as a *third* external monitor. A few weeks ago, a third of the screen started flickering. It had gone bad. I contacted the company since it was still in the warranty period. They promptly sent me a replacement unit! It was truly hassle-free. I've been recommending this portable monitor to coworkers because it's 4K. The fact that the company also stands by their products makes me feel even better about my purchase.

It is a perfect companion to my MacBook Air. The picture is crisp - 4K (or lower if you want). Power and video through the USB C cable connected to the computer (remember - the quality of the cable needs to be able to carry power and video - not all USB C cables qualify). The USB C to C cable provided in the box works just fine. I love how thin monitor is, and that it comes with a cover. It slips into my slim computer bag right next to my MacBook Air . So far - nothing to complain about!!