Very clear image, especially as the focus really allows for lots of flexibility on how far away the projected surface is. I've used it across a ceiling in a room from a bedside table. The image isn't really visible when there are lights on, but some low level lighting (e.g. street light through not very thick curtains) doesn't reduce visbility. The two slides are great - one has the contellations mapped out, but I prefer the one without the guidelines. It comes with a star map, so you can really get used to how to locate different aspects of the night sky. Batteries are not included, but they do seem to last, I did wonder if they'd drain quickly, especially with the self switch off function. Overall, a great product for the price, sturdy and not battery draining.