... Electrocardiograph Light, compact, 5.7 inch screen, printing with 112mm width paper 3 operation mode: Autom SIX CHANNEL ECG ... off, no paper, no battery Built-in ECG simulator Built-in rechargeable lithium battery Automatic adjustment ... to 150 in a SD card. Saved ECG waveforms replaying, printing or being transmitted to PCConfigurations ... costUSB Port & Workstation software Six Channel Electrocardiograph