Features: • Automatic adjustment of baseline. Optional selections for Rhythm lead. • 12.1 inch high-resolution color TFT touch-screen • AC/DC power supply built-in rechargeable li-ion battery • Single button operation • Sleep/wake up mode for saving energy and extending LCD life • Freeze real time waveform and record with selected format • Last 120 seconds waveforms reviewable and recordable • Printing preview of waveforms and auto-diagnosis result • Various printing formats • Complete digital filter, avoid baseline drift, AC.EMG interference • Automaticlly detect and record arrhythmia • Internal storage for up to 200 digital ECG records • Support all the ECG rolling paper, olded paper and A4 paper