BeurerPO45 Pulse Oximeter, Measures Heart Rate, Arterial Oxygen Saturation and Perfusion Index, Suitable for Medical Conditions & High-Altitude Sports

This is not a one-way product, like most of what amazon sales at present.You will be able to use this medical meter for quite a long time, as it has been confirmed to me by a medical doctor. Also the rechargable battery is a standard one, easily replaceable, and not binding you to specific battery makers.However, if you need an Oximeter + Heart Rate Meter only for one single day, do buy a cheaper one, by all means, most of them are cheaper in amazon, at least in the very short-run.When you dispose of those many cheap, sub-standard, one-way products, do not forget to refrain poluting the environment. The polar bears will thank you.

easy to use and read, no complaints so far.

Good build quality fairly accurate

This is a Hit & Miss with the readings. Found it does not register if you have cold hands !!!

For the price, you'd think the readings would be accurate. It keeps changing.

I am 60+ and got one bad blood disease other than that I take care of my health. I love the PI function in this one and would not like to be without it coz it gives you a nice info about the heart pump pressure.... and volume (and yes stress level after you know the base line...). I do regular breathing exercises and this meter is a 100% must for that, just to see how different breathing technique like Whimhof, 4-4-4-4-. 4-7-8 do to my oxygen level. I swim around 250km per year so I know few things about getting exhausted... smile.