At the top you get controllers for adjusting the Interpupillary distance and the lens to screen distance.Please be aware that VR headsets in this range don’t have built in LCD display nor any wires or ports to connect anything.So you needn’t not worry about compatibility.It will work with any smartphone ranging from 3.5 to 6inches of screen size.Please see: you need atleast a 4.5 inch device to get a good enough VR viewing experience.The BRAT VR headset has sufficient room to externally plug your headphones, both big and small.
It uses pallet type smartphone holder like in the procus pro, It works well with my 5 inch smartphone.This Vr headset also supports augmented reality , you just have to remove the front flap for that.You get adjustable straps or head support band on the top which holds the device in place even during rigorous head movement.You can wear this headset no matter how big or small your head is.Procus brat is much lighter than other expensive headsets.Also the head straps were designed in ways that the headset comfortable rests easily on your head with equally divided weight on all sides