Review (5/5): Expensive, but very nice.
It's just a water spray bottle, but it's much better than the ones you can get at the dollar store. It sprays a very fine mist and will continue to do so if you keep pulling the trigger. One pull and it will spray for a solid 5 seconds, maybe longer. I imagine you could use cleaners with it, like Windex or simple green, and it would work really well.