Like all plasmas the ST50 uses active 3D technology. New for this year Panasonic's active 3D glasses support the universal standard. In practical terms that means other companies' glasses that also support the standard will work with this Panasonic, and also that no 2011 or earlier Panasonic glasses will work with this TV. At $65 each the new Panasonic 2012 3D glasses cost twice to three times as much as Samsung's cheap models (the $25 SSG-3050GB and $20 SSG-4100GB). Check out our universal 3D glasses comparison for more info on glasses that are compatible with the ST50.