My unit arrived today and I haven't messed with it too much yet. I'm gonna do a clean install tonight and then mess with it some more in the morning

Specifications
Intel Atom x7-z8700
Windows 10
64 GB ROM
4GB RAM
Fan (Off, Slow, On)
Gorilla Glass 3
1280 x 720 Resolution
Mono Speaker
Bluetooth
Physical keyboard
Embedded Xbox 360 Controller
6700mah Lithium ion battery

Ports
USB-C
Mini HDMI
USB 3.0
MicroSD support up to 256GB
3.5 mm Headphone Jack

Here's another size comparison
Size Comparison between GPD WIN and Nokia N810

I am going to try installing Arch Linux tomorrow because a user on reddit by the name of "Azelphur" worked around a few bugs and got the wifi working and the rotation crash fixed.

I will post a full review in a couple weeks.

For now, I am willing to answer any questions you might have.