Sony's HMS-3000MT is a 2D/3D HMD aimed towards endoscopic imaging. It uses two Sony 0.7" OLED microdisplays (1280x720) and supports Dual-panel 3D method, built-in picture in picture feature and can flip images which enables the images to be viewed from each individual standing position. The GMS-3000MT is based on Sony's HMZ-T2 HMD.
the HMS-3000MT is now shipping in Japan. It costs ¥1,500,000 (about $15,000) for one HMD, monitor and cable and about ¥1,000,000 ($10,000) for each additional HMD. Plans to launch in other countries haven't been announced yet.
0.7" 1280x720 microdisplays