GPD Duo
gpd.hk
gpd.hk
If you're looking to get any GPD device, it's best to wait a few months after launch and they will be on the used market for a decent discount. Lots of early adopters buy these and ditch them because they aren't flawless, but they make fun toys.
This seems unwieldy and pricey for a gimmick that may not be easily serviceable.
I know it's almost impossible but I wish Apple does this. Or somebody can tack on the MBA motherboard with a custom display assembly.
The cable I use is a6' USB-C cable. The monitor is both powered and driven off of the MBA whether or not I have that plugged into the wall.