Summary: This projector does not come with a battery! I am currently deployed and bought this projector for the sole purpose of using it for training conducted in the field where a power source is not available. No where in the details of this device does it say that the battery is sold seperately. It does however go in great depth about how it can be used without a power source.
Summary: I bought this projector a while back and have had NO problems with it; the picture quality is amazing for such a small device. The best thing about this projector is how compact it is; perfect for someone on the go and incredibly easy to use. I would highly recommend this projector to anyone in the market.
Summary: I've owned this projector for over a year now and use it quite often. I've never had a problem with it functioning in any way and it does everything it is advertised to do. It is quite adequate as long as you are in a room with the lights off. I do not like the low resolution but this is something i knew when i bought it. The screen gets to about 60 inches i guess. The only reason it won't get bigger is because of the limited focus on it.
Summary: I was pleasantly surprised at the color and brightness of this low lumen projector. I project down onto a desk from a distance of 3'. It certainly isn't designed for lighting a wall from > 12'. The LED illumination is great for low power, long bulb life and for our particular application, it's great that the projected image doesn't show up in the infrared so that we can do machine vision for multitouch applications.
Conclusion: In all the reviews I read when trying to choose a home projector for digital slides, none mentioned one glaring problem with the PK 20, namely that whe in slide mode, it keeps on cycling the slides while you might hold one in "still." Thus using the still button means that the slide sequence created by the user is no longer valid. I would not have purchased the unit had I known this. The Mitsubishi Repair Center has just told me that this how the unit was built.
Summary: I bought this a few months back. I finally got to use it and it works great. If you use it with a computer you'll have to "clone" your monitor to get it to recognize it. I've heard of people using silk for portable screens but I used some other kind of material (muslin) from a craft store and bought a tent pole from walmart and sewed channels in both ends and used the tent pole (which breaks down with an elastic band inside of the sections) to support the top and bottom...
Summary: This little gem is just what I needed to make enlarging my designs and sketches much more easily. It is so tiny, it fits in my rolling laptop case along with my laptop and many extra cables, and it weighs very little. I love that it is SO SIMPLE to set up and use. I use my Windows Photo gallery to project images from my photos onto a piece of paper on the wall. I can then sketch it in on the paper in perfect proportion.