... ISO certificate for world market 4. Many types sale 1. Automatic Analysis ECG2. Factory price3. CE, FDA, ISO certificate for world ... 12 leads display and working status display3.Measurement & Analysis: automatic measurement and analysis, waveforms playback4.Measuring Data: heart rate,internal,time limit ... question is appreciate!Thank you.Parry Z 6 Channel Automatic Digital Analysis Electrocardiograph