Here is a tether-free VR system that lets you enjoy your PC, PS4, and Xbox games in a more immersive fashion. The MVR Ascend has a flip-up visor and interchangeable lenses for 2D and 3D viewing. You can use almost any smartphone with this.
The MVR Ascend VR headset lets you adjust volume, focal distance, and other settings. External sensors can be used for accurate head tracking.