Displayscreen type High resolution displayScreen Size 7'' ( 17.7 cm ) diagonallysweep speed 25mm secInformation Hear rate, Lead Pads, AlarmOn Off, SpO2, AED functions and promptsAlarm selection and limits, delivered Energy Defibrillatorwaveform biphasicenergy display monitor display indicates bothselected and delivered energycharge prompt type voice and visual promptselectrode impedance measurement range 0-250 ohms