A VR headset is a device worn over the eyes that immerses users in a virtual environment. It typically includes two small screens, one for each eye, which create a 3D effect. The headset often features sensors to track head movements, allowing users to look around and interact with the virtual world. Many VR headsets also come with built-in audio and may include handheld controllers for a more interactive experience. They are used in various applications, including gaming, education, and training simulations, providing a unique way to experience digital content.