Simple operation, simple design, simple life.
It was designed for samsung galaxy tab 4 10.1 ( SM 535 ) tablet, but should fit other models as well.
Maximum tablet height is 178mm.
Print on side with support for legs.
P.S The background app is printoid, it works really well (You need to install a newer android, because on the factory one it does not work)
The author hasn't provided the model origin yet.