iPhone 3D head mounted device
The ZEISS Cinemizer plus is a HMD (read : glasses with screens for both eyes). The special ZEISS technology guarantees unparalleled image quality on an imaginary TV screen with a 115cm (45") diagonal at a distance of 2 meters(78").
With resolution of 640 x 480 pixels, the cinemizer plus has been optimized for mobile video players and enables up to four hours of movie enjoyment. The cinemizer plus is compatible with all iPhones and video-enabled iPods, as well as DVD players and multimedia phones.
Typical retail price is 450 USD or 400€ on amazon.fr.
Check the Zeiss page here for more details.