As far as everything that I noticed. Otherwise, I can not complain. The homescreen is very very smoothly and everything clearly. Even Ethernet over USB Lan Adapter is working properly (which you will not find in most other Android devices!).
With this giant tablet you get an idea how it is to work on a touch screen, so big is the display. 10-finger touch works accurately and reliably. Excluding a joystick, this is the first device that you can also use to play, without which one must still take care of an extra TV connection (Wi-Fi is not really my thing).
The size is just right for carrying in a bag (for laptops). Greater than 19 "would then be very inconvenient carry into the subway. So also here perfectly.
The tablet has a mini-USB -> OTG USB adapter (about 20 cm long) with which you can connect all kinds of devices (joystick, external drives, mouse, keyboard, ...) and also a USB hub. Perfect.
For the transmission of data to a computer is a USB - Dock Adapter at (1m). The tablet can be infected with the adapter then no longer stand unfolded, because the port is located on the lower floor, on which the tablet is vertical. But you can buy a Tablet Stand (or 2 small) and then create the space to still connect the adapter to the bottom.
Very good is also that one the giant tablet does not have to upload via the USB port, but the right to charge a power connection exists. GPS is strangely also installed. Nice.
My conclusion: for 399 a bargain.