External Counter Pulsation Devices OM-A-II Key Features Display: 18 inch imported touch screen, high definition large viewing Angle display. Air compressor: imported from Germany, high efficiency and low consumption, energy saving and emission reduction. Mobile machine exclusive designed cuff and fast interface, easy to operate. Ergonomic humanized operation interface, fast and simple. Large wheel foot trolley design, easy to move push and pull. 360° rotation, good stability, high sensitivity. Small volume, light weight, beautiful appearance design. The whole machine is silent and noise reduction structure design, noise is not higher than 63 dB. Solenoid valve: special diaphragm valve, fast response time, to ensure the charge and exhaust speed, long service life.