Very small and handy. With a diagonal of about 85-90 cm, the best results in a darkened room. Good images at about 120-140 cm diagonal in a completely dark room. Everything else goes, but is no longer optimal. The little one makes some noise when it is hot (fan), but to cope. It recognizes all video formats, at least those used by me. FLV, MKV, MP4, AVI, MPG, M2TS, etc. In battery mode (movie) about 2 hours. But he's running well over power supply. A 500GB Toshiba has been recognized all USB sicks (up to 128 GB) and SD cards as well. When a Transcend 1TB he however fails. But to cope. Now even the sound. I still do not believe how out of such a small plastic tray, a volume can such come out of this quality. Better and louder than my 21 channel TV kitchens. I highly recommend it.