Meet Kangaroo: a small portable computer that turns any monitor or display into a Windows 10 system. It has an Intel Cherrytrail (Z8500) SOC and on-board battery. The dock offers HDMI and USB access. The machine offers Windows Hello integration.
Kangaroo offers 32 GB of storage space. You can upgrade it with a microSD card. The battery lasts up to 4 hours. Costs $99.