... 3/6/12 leads ECG waveform^Build-in real-time analysis software, average QRS template^RS232 and USB interface^Multiform printing modes ... , DFT filter^Sensitivity: Auto 10,20mm/mV±2% etc^Measure data: HR, interval, Duration, Axis^Paper speed: 25,50mm/s, ±3 ... ^Size: 338mm(L)*280mm(W)*85mm(H)Options:^ECG Workstation Software^SD Card^Portable Pack^Trolley^7'' LCD B/W, Color ...