We bought this product when my husband contracted a persistent pneumonia and used it to track his blood oxygen readings hourly. We used it since daily. We've found it to be very accurate as measured against the readings in our doctor's office. We do bring the little Oximeter with us and compare it against the readings on the medical office equipment. So far it has matched those readings exactly every time.
Easy to read , and love the travel case.
It worked as expected
Yes, this is the one you want. Slips onto any finger easily, turns itself off, accurate and fast.