Model: CMS-VE - Color: White - Material: ABS - Quantity: - LCD screen: 1.8" RGB - Battery type: 3.7V Rechargeable lithium battery - Working voltage: DC 3.6V~4.2V - Power: - Working time: about 10 hours (full-charged) - Measurement mode: - Heart sound mode measurement range: 20~230Hz - Lung sound mode measurement range: 100~800Hz - Combination sound mode measurement range: 20~800Hz - Heart rate measurement range: 30bpm300bpm; Accuracy: +/- 2 bpm +/- 2% - SpO2 measurement range: 35%100% ( Resolution: 1%); Accuracy: 70%~100% +/- 2% - Pulse rate measurement range: 30bpm250bpm; Accuracy: +/- 2 bpm +/- 2% - Measurement performance in weak filling condition: SpO2 and pulse rate can be shown correctly when pulse-filling ratio is 0.4%. SpO2 error is +/- 4% pulse rate is +/- 2 bpm or +/- 2% - Resistant to surrounding light: the deviation between the value measured in the condition of man-made and indoor natural light and that of dark room is less than +/- 1% - Packing list: - 1 x Stethoscope - 1 x SpO2 probe (length: 160cm) - 1 x Earphone (length: 113cm) - 1 x Power adapter (AC 100-240V 50-60HZ) - 1 x English user manual

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