DR VAKU Professional Pulse Oximeter Fingertip, SpO2 and PR Value Waveform PI Blood Oxygen Saturation with Sleep Monitoring Function Pulse Oximeter  (Black)

DR VAKU Fingertip pulse oximeter shows your measured SpO2 and Pulse Rate on a high-quality OLED screen (with six multi-directional display choices) || Comes with two critically acclaimed features, the Sleeping monitoring and Perfusion Index (PI), that will improve the reliability of the readings dramatically. The PI conveniently informs you of the strength of your pulse. The sleep monitoring function can keep the data record for 8 hours. Also comes with a lanyard so that you can use the pulse oximeter for convenient carrying. SPECIFIC || [SpO2] Measurement range: 70-99% Resolution: ±1% Accuracy: ±2% (70%-99%), unspecified (Pulse rate: Measurement range: 30-240 bpm Resolution: ±1% Accuracy: ±2bpm or +2% (select larger) Low Perfusion ?0.4% Power: 1.5V (AAA size) Automatic power off :Automatically power off when no signal in the oximeter for more than 8 seconds