Sony, another pioneer, released the Glasstron in 1997, which has an optional positional sensor, allowing the wearer to view the surroundings, with the perspective moving as the user's head moves, giving a deep sense of immersion. The VFX-1 has stereoscopic displays, 3-axis head-tracking, and stereo headphones. Another early VR headset, the Forte VFX1, was announced at CES in 1994. The Sega VR, announced in 1991 and seen in early 1993 at the Winter CES, was never released for consoles, but was utilized for the Sega VR-1 motion simulator arcade attraction in 1994.
