The Optoma Pico PK120 Pocket Projector ($200 street) is a tiny, featherweight pico projector that can operate with its included AC adapter or by battery power. Its image quality is decent enough considering the projector’s low brightness. The PK120 is a DLP-based projector rated at 18 lumens in brightest mode. It has a native nHD (640 by 360 pixels) resolution, a widescreen format with a 16:9 aspect ratio. Its LED light source has an expected lifetime of 20,000 hours.