Multi-Function Pulse Oximeter: Oximeter Can Measure Spo2/Perfusion Index (Pi)/Heart Rate At The Same Time, And Has A Mute Alert Function That Can Remind You To Pay Attention To Your Body At Any Time. In Addition, The Pulse Oximeter Fingertip Uses A High-Definition Oled Screen, Which Allows You To Visually See The Real-Time Heart Rate Dynamic Graph. This Is A Monitoring Device Suitable For Family/Office/School. | | Accurate And Fast: The Fingertip Pulse Oximeter Can Quickly Monitor Your Body Within 8 Seconds, Helping You Quickly Understand Your Physical Condition.The Accuracy Of The Mini Oximeter Is 2%. Because Oximeter Finger With Pulse Measures In Real Time, The Data Changes Dynami