Dragon Ultrasonic Diffuser with different LED light settings and different timer modes. Comes with instruction booklet. Can be used with or without essential oils. Without the oils it can be used as a humidifier. There is NO heat. Powered by a supplied USB cable which can be plugged into any phone charger, computer or like device. 5.5 inches tall and 4.5 inches wide. Cold Cast Resin, 2 Button Function. One for the lights and one for the mist.