(Virtual Reality headset) A head-worn apparatus that completely covers the eyes for an immersive 3D experience. Also called "VR goggles," VR headsets may be entirely self-contained such as the Oculus Rift or the HTC Vive. They are costly and must be tethered to a very robust computer to handle the animation. Considerably less expensive units require the user's smartphone to be strapped onto the device.Whether within the goggles or relying on the smartphone, VR headsets use some combination of accelerometer, gyroscope, magnetometer and proximity sensor to detect the user's motion. See AR headset, AR/VR headset, virtual reality, Oculus, Samsung Gear VR and Google Cardboard.