Phillips Interpretive ECG: Real-time, continuous recording of 3, 6, or 12 channels.Simultaneous acquisition of up to 12 leads.Recorder speeds of 5, 10, 25 or 50 mm/sec allow capture of multiple levels of detail. Lightweight enough to move easily around your office or clinic(19lb/8.5kg) Full-size 8 1/2" x 11" or metric reports (z fold) for convenient reading and filing. Full diagnostic frequency meets most recent AHA guidelines. AC/DC operation, reconditioned/new batteries. 90 day warranty.