... display Big font display Pacemaker detection Specification:ECGLead type: Standard 3-Lead or 5-Lead selectableLead selection: ,,,or ,,, aVR, aVL, aVF ... .1Resolution: 0.1Unit:Celsius/FahrenheitChannel: 2 channels Recorder(Optional)Type: Built-in thermal recorder, 3 channelsMode: Waveform or text Power SupplyBattery: Rechargeable ...