The GE Marquette Mac 5500 ECG EKG Module EKG Machine is a reliable and tested working device designed for resting ECG applications. With the trusted GE brand name, this EKG machine ensures accurate readings and efficient performance. This module is complete and ready for use in various medical settings to help diagnose and monitor cardiovascular health. Comes complete with battery, Mac , ekg module,trunk connector, cables leads and paper. Patient ready