When you feel tired and want to have a relaxation ,this Essential Oil Diffuser will help you release stress ,pressure .It will create cool and fragrant mist ,humidify the dry air. And your room will be full of lovely scent that you will have a good mood to your next work and have a healthy life.Item No.:YYM-XXJ 300 005Capacity: 300mlFeatures:1.Mute(30-35db).2.Ultrasonic technology,convenience.