InstructionsCMS-M is a kind of multi-functional visual stethoscope It is added with collection ECG waveform function on the basis of the traditional medicinal stethoscope.It can display the heart rate, the pulse oxygen Saturation and pulse rate can also be monitored through SpO2 probe. The product is applicable for family, hospital, private Clinique, community medical treatment.etc.Main featuresRegular stethoscopeCompact and portable,easy to useDisplay of ECG waveform, heart rate,SpO2 ,pulse rate ,pulse waveformAdjustable screen contrastAlarm for SpO2 and pulse rate exceeding limitsLow power consumptionMain ParametersHeart Rate measuring range: 30bpm~300bpm ,Accuracy: ±2 bpm or ±2%(select larger)SpO2 measuring range: 0%~100% (the resolution is 1%),Accuracy: 70%~100% :±2% ,below 70% unspecifiedPulse Rate measuring range: 30bpm~250bpm,Accuracy: ±2 bpm or ±2%(select larger)Resistance to surrounding light: The deviation between the value measured in condition of man-made light and indoor natural light and that of darkroom is less than ±1%.Measurement Performance in Weak Filling Condition: SpO2 and pulse rate can be shown orrectly when pulse-filling ratio is 0.4%. SpO2 error is ± 4%, pulse rate error is ±2 bpm or±2% (select larger).Display : 2.7" LCDPower consumption:≤60mAVoltage: DC 3.6 ~ 4.2VPower Supply: 3.7V Lithium BatteryBattery working hour:It can last more than 20 hours when the power is full.Safety Type:Internally powered equipment, B TypeAccessoriesA User ManualA power adapterA data lineAn oximeter probe (optional, BF applied part)Physical IdentityDimension: 87mm(L)×63mm(W)×19mm(H)Weight: 180g