SantamedicalDual Color OLED Pulse Oximeter Fingertip, Blood Oxygen Saturation Monitor (SpO2) with Case, Batteries and Lanyard

Essential item for church, school, or small business first aid kits. Battery life is decent, but should have a QA check on a regularly scheduled basis.

This is GREAT!. I recently returned another brand because it was 'slower than molasses'! Your produce, I wouldrecommend!!!

This oximeter works perfectly! I have breathing problems and need to check my oxygen level frequently. I carry this oximeter in my purse at all times. The size is perfect and the numbers are so easy to read. I love it!

Update: The seller of this item saw my initial review and reached out to me. They offered to send me another device to see if I would be more satisfied. The new item arrived a few days later. That customer service was impressive and appreciated. I tried it out today and the new device does seem more accurate on my right hand, the readings fluctuated quite a bit on the left hand. I will need to consistently use it on my right hand.I also read the manual more carefully and saw in a "safety" section that it states it was intended for "non-medical use in healthy people to monitor their pulse and blood oxygen levels during sports and/or aviation only". The description on Amazon mentions it is "intended for sports enthusiasts" but it also states it is very accurate. There is no mention that it should NOT be used for medical purposes. For me the description is confusing. I need it to monitor pulse-ox while treating newly diagnosed asthma. So be aware of that.Lastly, the item does NOT have a travel case or pouch as described on Amazon, just a very thin, loose-fitting silicon cover that can stay on the device for some protection. It is probably a change by the manufacturer and should be updated on Amazon.Original Review-I purchased this after reading reviews on Amazon and trying to find outside reviews. First, when it arrived, I noticed it did not have the travel case mentioned in the description. I sent a note through the manufacturer's website and got no reply. The more I used it, the less accurate it seems to be. I am a senior and have just been diagnosed with late-onset asthma. My Dr. recommended I get one of these to track my progress or the possible need for more treatment. The reviews and description lead me to believe it would be accurate. The first few days I was still having breathing difficulty and the readings were 94-95% O2 saturation. But as I began getting better from a significant attack, and was breathing better, the readings were 92-93% for a while, then jumped to 98% briefly and back down. This is just not the device I need to monitor my health. I am trying to return it but having difficulty with that as well. Needless to say, I am quite disappointed.

Great item!!!!!

Ok, I want to first want to preface this by saying that I’m a medical doctor, so I do know a thing about pulse oximeters—both in theory and in practice. I noticed the top review has a picture of the pulse ox on a stuffed animal, showing at 99%, as “proof” it is inaccurate equipment.There are a number of problems with this supposition, and it shows a basic lack of understanding of how pulse oxes work. They are equipment that are designed to measure something specific under specific circumstances of being clipped to a fingernail with no opaque polish. NOT inanimate objects like markers and stuffed animals.A pulse ox works by shooting red light across the width of one of the middle fingers. Since tissues are translucent rather than totally opaque, the amount of light that is measured at the receiving sensor measures the proportionality of absorbed red light, which equals the proportion of material that absorbs it. This is called Beer’s Law. Pulse oxes are also governed by another law called Lambert’s Law, which says the amount of light absorbed is proportional to the length of the path that the light has to travel in the absorbing substance. The third law has to do with the fact that oxygenated hemoglobin (which in itself is red) absorbs more light than deoxygenated hemoglobin. This is due to the difference in wavelengths of red and blue light (red objects absorb more red light than blue objects). This is also why the test is not accurate if you have red nail polish on or your finger is not centered and light can move around it (or if you use a tiny pinky finger, for example). You can now see why it’s totally irrelevant how using a pulse ox on an inanimate object (especially, a bright red felt tail!) with totally different properties than an index finger is not a good way to judge accuracy. That’s like saying that your kitchen scale did not work well because you threw it in a swimming pool to measure the weight of the water. Equipment is only designed to work under particular circumstances and limitations.Anyway, I purchased this pulse ox for my father. He has COPD and a bunch of other risk factors for COVID-19, so I appreciate having a heads up if his oxygen sats dip. This is a good vital sign early marker for covid because it is an unusual disease, in that it causes what doctors have nicknamed “happy hypoxia”. You can google this to find out more, but it basically means that in other pneumonias that devolve rapidly into hypoxic conditions that require ventilation, their symptoms also crash, to the point where they lose consciousness or can barely talk. Covid-19 is more insidious and can creep up on some patients, who might be sitting up in bed (yes, symptomatic, but still conscious and talking), fooling even medical professionals into thinking their cases were not too serious until it was too late. This is the reason medical professionals find pulse oxes to be useful—they measure signs of disease (objective results from testing) rather than symptoms (subjective reports of feelings from patients). It gives me peace of mind to know my father has this and can measure it daily when he does his insulin shots and measures BP. He has chronic bronchitis, diabetes, stroke history, high blood pressure, obesity, and he is nearly 80, so he’s definitely in that very high risk category.On the actual unit, it was extremely easy to set up and use. You press a button and it turns on (once you put the batteries in the right way, lol); turns off automatically. I didn’t find anything inaccurate about it... and the hardest part of it was probably getting the lanyard in, haha (I advise using a needle to get the other end out of the hole; there’s no way a senior citizen could do this alone, so please help them). I’ve used many pulse oxes in my day. The professional ones in the hospitals are about 1% more accurate than these little portable, cheap pieces of equipment that you can buy for the home. I highly recommend them for any patients or elderly who have risk factors or disease comorbidities (especially, pulmonary). These little portable ones were sold out for months during the pandemic first peak (even hospital staff had trouble getting their hands on privately sold ones), so I’m glad to have one now.

We have used this since the middle of covid and it works accurately.

Meters works great and give proper reading compared to other meters i have bought.