Optoma is back by teasing us with a new pocket-sized projector known as PK102, featuring 4GB of internal memory to boot. This makes it a snap to store backups of your presentations or even your material wherever you go, doing away with the need to tote around a notebook or netbook. Supported file formats by the Optoma PK102 include JPEG, MPEG-2, MPEG-4, RMVB, RM, WMV, DivX and XviD video files, while images are handled by JPEG and BMP formats. As for audio, MP3 playback is supported, although don’t expect the integrated speakers to reach an entire hall. After all, the Optoma PK102 is meant for close quarters viewing only with its 480 x 320 resolution images thrown onto a wall nearby courtesy of the DLP Pico chipset. It is powered by a Li-ion battery, measuring 51mm x 17mm x 105mm while tipping the scales at 118 grams. Expect to pick up the Optoma PK102 pocket projector this June for $570 thereabouts.