Dede sleeps next to one of these.  She loves the lavender and onguard at night. Changing lights are amazing. Dede has several of these, she loves how she doesn't have to fill them up so often since the water tank is larger than most diffusers.
 
Continuous runtime of 6-hours per fill, enjoy while you sleep or when you're awake. Multiple light modes, including a unique ‘candle light mode’ that mimics the flicker of a burning candle. 6 Hours for medium room size, continuous flow of mist and soft white light or colored light. 150mL Water Capacity
Includes USB Cord
Automatic Safety Shut Off 
ALL SALES FINAL.