... ''color TFT LCD screen with waveform displayrechargebale high-energy built-in Li batteryeasy to learn, easy to use-- simplified ... view: user-selectable; I, II, III, aVL, aVF, V(5-lead); I, II, III(3-lead) Gain Selection: x1/4 ... , x1/2.x1 and x2 frequency response: diagnostic 0.05 to 90Hz monitor ... time: 4 hours, typicalQ100D ECG+TEMP patient monitor Q100D ECG+TEMP patient ...