Model Number: XR-M031-001 Brand Name: Xuerui Key Specifications/Special Features: Multi-function Stethoscope, CE Approved.Integrated with regular stethoscope,ECG waveform display,heart rate and pulse oximeter.Large LCD screen display: 160×96; LED back lightRS232 interface connection to computerChangeable SPO2 sensor for different patient ( neonate,infant,enfant and adult)Freeze function: convetient to observe the heart rate, ECG and SPO2Real-time display of the heart rate,ECG and SPO2Low power consumption, Long life batterySPO2 is option