What a projector!! Love it so much, bought it for my ipod classic and it really does do the job. I am not going to pretend the picture is as good or as large as the normally projectors but as a portable projector it is certainly a trendy gadget for anyone who likes technology. Also I can imagine it being perfect for people travelling around giving talks or lectures. The quality of the unit is surprising very sturdy for the price. Benq really do make some inspiring products. Lens seems to be of a high standard - before I bought it I read a lot of reviews and it seemed to pass the experts critical reviews too. I also have used it with my camcorder to show all the family videos of weddings and holidays. It says on Benq the screen size is 15" to 80" - I think this is fairly accurate. It has a usb stick drive which is incredibly handy for viewing everything from photos to films. I really recommend this mini projector and for the price it is a steel!!