I bought one of these from an online supplier. Its a nice computer in-itself, sturdily built and quite a sleek design, though the keyboard you can purchase has rather "cluncky" cheap keys, BUT it takes a phenomenal time to charge via the USB 2 socket, from 0-100% it takes around 14 hours, only giving you about 5 hours of usage. (I see some versions DO have separate 9V supply input).
Even when plugged in it still guzzles batteries, and makes little difference to the amount of time you can use it.
It states on the back that it takes 2A at 5V input, but when measured it only appears to take the USB allotted standard of 0.5A (even with a high power supply). I have tried to contact the manufacture to inquire if you need a special charger, but they simply do not reply.
Windows 10 is pretty awful, a big improvement on windows 8, but it takes considerably hacking to switch off all the features that send out streams of personal data; photos, location, updates (for this computer AND synchronizing to any other computer in the neighborhood), even then windows will eat swathes of bandwidth. Unless you also do some internal settings hacking, windows wont actually shut down fully when you tell it to.
There seems to be some new "wonderful" touch gestures, when used with the touch pad of the keyboard, for zooming, switching to desktop, minimising windows etc. I think i have figured out the zoom, but the switching to desktop etc. is still a mystery, and so it tends to do this with little prompting, when you are in the middle of simply trying to move the cursor. Even though the "advanced gestures" feature has been switched off it still persists, and it is not clear if this is simply a fault with software / hardware, or if it IS in fact intentional!
I would love to get Linux Mint working on this tablet, (so I can take control back over what my computer is doing, not what it thinks is best for me!) but the UEFI boot means windows has control, and so far I have been unable to get Linux installed alongside (issues with "grub" boot installation, that so far I have been unable to fix even with reference to online solutions.) Getting an internet connection to the Linux installation so it can also install driver etc. is also a potential challenge.