Summary: We were surprised by the smallness of this projector and loved its portability, but it is not powerful enough to do anything with. We wasted $400 on this product as it is hard to process returns with Dell, and they charge $54 restock fee. Returns must be done in 21 days, including weekends and holidays. I made my third and final attempt to return on day 25 and Dell refused so I am stuck with it and wasted $400 in educational funds on this product.
Summary: Cons 50 Lumens? 50?? To put that in perspective, a typical LCD projector is 1500 lumens and big ones are 2500+. Of course those are pushing a much larger image as well. But even at computer monitor size - 50 Lumens is a flashlight - this thing barely shows a 3' diagaonal image in a room with _any_ ambient light. You will literally have to do your presentation in the dark.
Excerpt: I was expecting it to rely on batteries on some kind but please understand that that wasn’t the case. But I will say that this small projector does let off a bright light. For it to be so so small I wasn’t excepting the light to be so powerful. Most of the things I was showing on my projector was a bit fuzzy so really I didn’t get good use out of the Dell M109S On-the-Go Projector. I took it back and I don’t regret it one bit.