Review on FACEIL Digital Pulse Oximeter Fingertip Blood Oxygen Saturation Monitor With LED Display, Fast Spo2 Level Reading Heart Rate And Perfusion Index - Includes Lanyard & Batteries by Blake Clemons

Works right out of the box. Display is attractive and easy to read. Looks professional. Is consistent, which is reassuring. Has a perfusion reading that is very useful to be sure you are getting a good O reading and is an indicator of your blood flow. I keep it by my desk and take a reading at various times of day, sometimes alongside my BP cuff reading. All in all, simple, useful, clear, consistent in use.