The screen is lighter than a laptop, so it feels like you have a second one with you. The internal battery is worth its weight in gold. I run the screen on the Air and it runs flawlessly. The resolution is good but there is a clear difference compared to the Retina. I can highly recommend it as a second screen.

I find the screen very mobile. Folded up, it's a bit thicker than a school exercise book and just as big. The problem is not the mobility, but that it is often not recognised by the PC. It then takes umpteen connection attempts via USB C until a connection is finally established.