The technology commonly used in virtual reality headsets is 3D graphics rendering combined with motion tracking. VR headsets create immersive environments by displaying 3D visuals that respond to the user's head movements, providing a sense of presence within the virtual space. Advanced techniques such as stereoscopic rendering simulate depth perception, while spatial audio enhances the feeling of being in the environment. Together, these technologies enable users to interact with and explore virtual worlds, applicable in gaming, training, and educational scenarios.