▎ 摘　　要

NOVELTY - The system (100) has a first device that comprises a first electrically conductive membrane pump system. The first electrically conductive membrane pump system comprises first electrically conductive membranes. A second device comprises a second electrically conductive membrane pump system. The second electrically conductive membrane pump system is operable to receive the information transmitted through the air through ultrasonic waves by the first device and is operable to emit sound within the auditory range of humans that corresponds to the information transmitted. USE - Graphene-drum pump system for sending and receiving ultrasonic waves. ADVANTAGE - The graphene-drum pump system is capable of efficiently transmitting information through the air through ultrasonic waves. The pumping speed of the device increases with increase in the maximum allowable voltage. The valve is operable to prevent the electrically conductive unit from coming in contact with the gate. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) device that comprises electrically conductive membrane pump; and (2) earbud system. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the graphene-drum pump system. Graphene drum pump system (100) Insulating material (103)