Jasmine Aroma Diffuser: Automatic aroma diffuser Made of polypropylene and silicone rubber Gently releases your favorite fragrance, at 20-minute intervals or continuously Uses ultrasonic technology, transforms the water blended with essential oil into an extra fine mist and dispenses it into the surroundings . Measurements: 5.25" W x 3.5" D x 5.25" H " material="Polyethylene, silicone rubber" origin="China"