portable ecg medical ecg digital ecg medical equipments medical supplier medical devices medical products FeaturesSimultaneous acquisition of 12-lead ECG data, ... and printing of l 12-channel ECG waveforml Graphic display of 12-lead ECG waveforml Built-in analysis software ... -printing formats: manual/automatic, standard 12 channel, 3 channel plus 3 rhythm lead, l 6 channel, 6 channel plus rhythm lead ...