ViewSonic VX1655-4K 15.6 Inch 4K Portable Monitor, IPS Display for Comfortable Mobile Workspaces and Second Screen Productivity, Built-in Stand, 60W USB-C, and Mini HDMI Inputs

Impressive clarity and connectivity. Very useful during travel.

Road warrior grade second monitor; super high resolution, light weight, easy to hook up, and easy to pack & carry. I drop it into my backpack with my laptop in the same padded spot. Gives me a full two screen portable office. Power and video signal run over the same USB-C cable, so i only need one power outlet (or none if I want to run the laptop off battery). Love love love this monitor.

Worked great until it randomly stopped working after a few usage and plane flights. I tried to get it repaired under warranty. I sent it to ViewSonic in the protective packaging that comes with it, and several layers of package cushioning. They declined to honor the warranty citing shipment damage. If it gets damaged in that much padding while being transported, maybe they shouldn’t advertise this as a portable monitor.

When I was shopping for a portable monitor, my top two criteria were: 1) Text looks correct with MacOS (no font scaling/aliasing issues) 2) Matte screen (no reflections) I'm a bit of an aesthete, and these sort of details really drive me up the wall! But this monitor absolutely does the trick. (Note that only the 4K LED model that has a matte screen--the OLED and the touch screen versions seem to be glossy.) The text looks perfect on the screen, and I actually scaled the resolution down to 1680 x 945 in the MacOS Displays settings to duplicate the scale of my laptop screen. The display is plenty bright; I've currently got it set to 60%. The color temperature and contrast are great, and there are a bunch of built-in adjustments in case you want to tweak the color, blue light level, and god knows what else. The monitor controls on the joy knob on the stand are relatively intuitive. The speaker is tinny but hey, it's there if you need it and it doesn't come on by default when my laptop is connected. The kickstand on the back is FANTASTIC, solid feeling and endlessly adjustable. This is in landscape mode, though. It's not particularly stable in portrait orientation and leans back further than I would like, but it would work just fine with a stand or with something propped underneath the kickstand. As far as I can tell the cover doesn't fold into any sort of additional prop, but it does magnetically attach securly. The only downside I've found is that it takes a little unplugging and replugging for my my Macbook to recognize the monitor sometimes, but once it finds it, it connected immediately. (Like if it doesn't come on, take the USB-C out and then reconnect, press the power button, etc...it will sort itself out.). In the end, I'm very happy with this monitor and definitely recommend it.

I am a UX designer with a macbook pro 15” and I travel a LOT. This is wonderfully sharp, great color for UX design, and packs so easy in luggage. It’s just about the same size as my macbook pro 15” so I just pack it right up against the computer. Great to be able to charge off the laptop.

The monitor quality is great. BUT the power supply is a BAD joke!!!!!! It is about the size and weight of a small brick and the connection cord is way too short. This makes this not portable for me which is why I bought it. I would advise against this especially for what it cost.

Great monitor. I bought it as a travel monitor but I now use it as a third monitor in my desktop setup and it works great!

Worked fine for a while then broke with no warning. ViewSonic makes you pay shipping etc. to send it to them so they can confirm its broken and try and repair it.

I bought 3 and returned 2, so that shall tell you something. Overall, they have some weird issue with the signal, and some apps have a very weird colour saturation level on this display. And support was kinda useless. And sometimes it just turns itself off for a moment, which may be due to high temperature of the internals (because it heats quite a lot for that size) .