... 12 leads 2.Single-channel ECG 3.With analysis and auto measure 4.Small screen (3.8''/ 63mm) ... bitTime Constant≥3.2sFrequency Response0.05Hz~150HzSensitivity2.5, 5, 10, 20 (mm/mV), AutoInput ... . Light in weight, compact in size2. Three kinds of operation mode: Automatic, Manual, ... (available in Class G machine) LCDSpecificationECG-1101LCD TypeDisplayHelpClass G3.8 inch Graphic WaveformYes ECG machine