This product is one sort of breastpump that has automatic emulation and portable funtion. It consists of the main machine, three-port sucking-device, interconnecting-pieces, and feeding bottle etc. It is controlled by micro- computer chip. It can emulate sucking actions of infant. The sucking velocity and sucking Intensity divides into 2 adjustable speeds and 3 adjustable grades, it emulates babies' sucking rhythm fast and slowly, as well as sucking quantity. It is adopted somatology design for mother's physiological needs. By touching the key button, the mainmachine shows numbers in the display, to realize the operation humanized. For more information about our company, welcome to visit our website: http://www.deluxe-breastpump.com/, there are clear photos, good video and detailed specification on it.