Power: AC 100-240V Operating Voltage: DC12V Ultrasonic Frequency: 2.2MHz Size of Atomized Partice: 0.5-5 Micron Capacity Of Cup: 10ml Vessel Capacity: 25ml Automization volume 0.375ml/min: 20 mins timeing automatically Automization volume 0.5ml/min: 10 mins timeing automatically Features: Portable nebulizer Quiet treatment Two airflow control Compact and portable Suitable for all ages people Tips: The better way use about 20-60 degrees hot water pour into big cup when you first time use it, only can be use clear water. The machine itself does not have the heating function. It must be use we sent you plug, another plug can't working, hope for understanding. This product is could charge by Usb cable. And it also support batteries, but you need buy batteries yourself. For transportation reason , batteries is not allowed to be shipped by air . Package Included: 1 * Host 1 * Adult mast 1 * Children's mask 1 * Mouthpiece 1 * USB cable