Materials Matte ceramic, BPA-free plastic. Technology Ultrasonic: 2.5 vibrations/second. 4-hour and 8-hour settings. Specs Width: 8.7 cm. Height: 18 cm. Weight: 1.1 lbs. Misting output Consistent: 1 fl. oz./hour. Intermittent: 0.40 fl. oz./hour. Diffusing capacity 500 sq.-ft. Safety Automatically turns off when time is up or when water runs out. Power cord Compatible with North American outlets. Water capacity 70 ml.