A VR Box also called as the virtual box is meant to show the display that is present on the mobile screen in a 3D view.
Talking about this virtual box the headsets provided are external that is it becomes a complete mess when you have the things on and off your head.
The lenses provided to the virtual box are not properly arranged which makes it difficult to concentrate on the screen.
This box is not for all sizes of phone. Preferred size is 5 inches. The button that holds the phone would unknowingly switch my phone off.
I hated using this vr box and would rather to buy another one.