This attractive white and bamboo colored essential oil diffuser holds 300 ml of water, has the option of 7 different colored lights and shuts off automatically when it runs out of water. It runs for approximately 6-8 hours and can be set for 60, 120 or 180 minutes. It also has two different mist output settings - high and low. All you have to do is fill it to the water line with water and drop in 4-10 drops of your favorite essential oil blend. Relax and enjoy.