I gifted this to myself for my birthday, as its been on my wishlist for a while, and Im so happy I did - such a great purchase!  Its such a beautiful diffuser compared to other designs, and Im a sucker for anything with hymalayan salt, so combining the two is very clever - kudos to the person who came up with the design, you did a wonderful job!  Overall, functions as a diffuser should.  The lamp is optional and doesnt always need to be on, and the entire unit turns off automatically when it runs out of water.  Great great product, you wont be disappointed!