Zacurate 500E-B Wireless Bluetooth Fingertip Blood Pulse Oximeter Monitor with FREE App, SpO2, Heart Rate, Plethysmograph, and Perfusion Index Finger Oxygen Sensor Meter

Product description Multi-directional Display Portable Adjustable Brightness Step 1 Step 2 Step 3 Step 4 How does the plethysmograph work? Each wave (see image) corresponds to a heartbeat and the wave amplitude corresponds to the amount of blood detected. If the wave amplitude is low, this means that your blood perfusion is too low for a reliable read. You should retake your measurement and make sure that your finger is positioned right under the LED lights. Zacurate Pulse Oximeter 500E-B Bluetooth Add to Cart 500DL Pro Series Add to Cart 500C Elite Add to Cart 500E Premium Buying Options 500BL Add to Cart Children Pulse Oximeter Buying Options Customer Reviews 1,388 241,126 241,126 1,662 123,779 — Price $39 99 $22 99 $34 99 — $9 99 — Maximum SpO2 Displayed 100% 100% 100% 100% 99% 100% Infrared Shield ✔ ✔ ✔ ✔ ✔ ✔ OLED ✔ ✘ ✔ ✔ ✘ ✔ Battery Life 30hrs 30hrs 30hrs 30hrs 30hrs 30hrs Plethysmograph ✔ ✘ ✔ ✔ ✘ ✔ Sound and Alarm Function ✘ ✘ ✔ ✘ ✘ ✘ Accuracy deviation +/- 1% +/- 2% +/- 2% +/- 1% +/- 2% +/- 2% Recommended Finger Size Adult Adult Adult Adult Adult Child Recommended Age >12 Years Old >12 Years Old >12 Years Old >12 Years Old >12 Years Old >12 Years Old Can I check my readings while I am exercising? What is the SpO2 and pulse rate range the pulse oximeter can register? Can the 500E-B Pulse Oximeter be used on children? How do I know the battery is low? Why does the reading fluctuate and why is the reading different on different fingers?

From the brand OLED Pulse Oximeters