Glasstron was a series of portable head-mounted displays released by Sony, initially introduced in 1996 with the model PLM-50.

[1][2] The products featured two LCD screens and two earphones for video and audio respectively.

[citation needed] The Glasstron was not the first head-mounted display by Sony, with the Visortron being a previous exhibited unit.

[1] One application of this technology was in the game MechWarrior 2, which permitted users to adopt a visual perspective from inside the cockpit of the craft, using their own eyes as visual and seeing the battlefield through their craft's own cockpit.

[citation needed] Supported video inputs included PC (15 pin, VGA interface), Composite and S-Video.