This diffuser runs constantly on one fill of water for roughly 8 hours straight. When it is empty it shuts off. It is extremely easy to fill with water and its motor is silent.
Varible Speed Diffusion (High, Medium, Low)
Timed Diffusion 3 Settings ( Constant ON, or 60 MINS ON, or 30 secs ON/OFF) Runs for 2 Hours
Cover roughly 500 sq ft. This will cover a nice sized living area. Aroma always depends on the amount of Essential Oil added.
Recommend 5-15 drops