I received my new diffuser in 2 days and I was so surprised on how big it is !! I litterally gasped !! It has 3 settings, 1 hour, 3 hours and 6 hours. This mist is strong and steady and it has lights that continually change colors ! Its very easy to use, I had mine set up in 5 minutes ! I couldn't be more happy with my new diffuser !!