... : user-selectable; I, II, III, aVL, aVF, V(5-lead); I, II, III(3-lead) Gain Selection: ... /rejection: yes ST Accuracy: 0.01 mv or 5% of reading, whichever is greater, over heart range ... is greatertrends memory: 96 hours with a spo2 reading every 5 minutes display: tabular , graphicalinterface & display keys: 4 ... type: thermal printer paper speed: 6.25, 12.5, 25 mm/sec physical properties weight:1.7kg size ...