We offer paramedic defibrillator (cu-er3) to the customers. The paramedic defibrillator (cu-er3) has the capabilities of the paramedic cu-er2 plus spo2 monitoring capability. Spo2 indicates the amount of oxygen saturation in the blood. It is intended for use by emergency first responders. With its ecg and spo2 monitoring capabilities, paramedic defibrillator (cu-er3) may also be used in hospitals when a low cost defibrillation and monitoring capability is desired.