Product review (5 stars): Excellent diffuser!
This is a great home. office, or even vehicle diffuser.  I have another USB diffuser that is flash drive size and it goes through the oil quickly and does not emit much scent from the oil.  This unit can have a room smelling great within minutes and the absorbent pad holds more oil, which makes it last longer.  Initially I was worried that this might make too much noise, but you can barely hear it and I have to check to make sure it's on.  We also plan to use this as a night light / essential oil diffuser when guests visit because of the LED option and how quiet it is.

I am very impressed with this product and would recommend it.