Bests & Worsts Reviews from Amazon

I would like to start by saying I am a registered nurse with ICU experience. I have used many brands of pulse oximetry devices. This one is great for an inexpensive home device. I tested its accuracy with those at the hospital and was spot-on. One thing you always want to have when you buy a pulse oximetry monitor is that waveform which is called the Pleth. Why Is that important? Because it relates to the accuracy of your reading. If that waveform is dampened that means your Reading is inaccurate because it is not picking up on ALL of the red blood cells that carry oxygen. A flattened waveform is most likely. A false low reading. I suggest always getting a device with that waveform. Not all brands have that; they just show you numbers. In which case you do not know how well it Iz reading