Mobile VR headsets:
Which are basically goggles that will hold a smartphone, have allowed VR apps to spread into the consumer market. The goal of each type of VR headset is to provide the viewer with an experience that is so real, the headset itself is forgotten.
Standalone VR headsets:
(Untethered, wireless, standalone VR) don't require a PC or a smartphone to deliver a VR experience. The self-contained headsets includes built-in processors, GPU, sensors, battery, memory, displays, and more.