... 12-lead ECG data, real-time recording and printing of l 12-cha TWELVE CHANNEL ECG Features Simultaneous acquisition of 12 ... /automatic, standard 12 channel, 3 channel plus 3 rhythm lead,l 6 channel, 6 channel plus rhythm lead, 60s analysis of ... arrhythmia, R-R histogram, trend graphl AC, DC or built-in lithium battery ...