Product features: MicroDrop Calimero 2 Year Set Child Universal Contents: RF 7 plus childrens nebulizer, mouthpiece with exhalation valve, compressed air hose, filter compressor, universal adapter (for connection to other compressors*) and instructions for use. * Please note that some manufacturers of inhalation devices do not permit their devices to be used with inhalation accessories from other manufacturers! Source: www.mpvmedical.com As of August 2017