Even if you don't have a VR headset, you can still get a "see and hear things all around you" VR experience using your mobile phone on its own.
The next best thing thing to a VR headset is a Cardboard viewer. A Cardboard viewer will give you the full 360 degree VR experience at a lower cost. A unique feature about the cardboard viewer is the collapsible design.
A VR headset will give you the full 360 degree virtual reality experience.