YIMI LIFE Pulse oximeter fingertip with Plethysmograph and Perfusion Index, Portable Blood Oxygen Saturation Monitor for Heart Rate and SpO2 Level, O2 Monitor Finger (White) - Battery Not Included Pulse Oximeter  (White)

Meet One of the World's Most Advanced Pulse Oximeters. The oximeter that includes both Plethysmograph and Perfusion Index (PI) in one device. Determine the optimal time to take a reading. Eliminate second guessing if readings are accurate and reliable... Perfusion Index. The Perfusion Index (PI) informs you of the strength of your pulse. If the PI value is less than, 0.2%, this means that your hands are either too cold or improperly positioned in the pulse oximeter. Simply warm your finger and reposition it so that it is right between the LED light and sensor. No more second guessing if the readings are reliable or why the pulse oximeter is not giving a reading... Why Choose This Pulse Oximeter?. Reliable, Accurate, Sensitive, Portable... Multi-Directional Display. Display can be rotated, offering 6 different layout options. Choose the layout that you can read conveniently or switch to another layout for your caregiver to read... Alarm and Auditory Function. Auditory alarm can be set to warn you when your SpO2 and Pulse Rate are beyond set limits. Auditory beep can also be set to accompany each detected pulse beat