Been wanting one for years for my med bag, spent a decade as EMT certified with occasional to rare patient care.
A decade ago a Pulse Ox was a few hundred, I see now they are only a few bucks.
I could be dreaming but wanting a USA made pulse ox that will last a long time and give good data, maybe a common battery. It’ll live in my med bag in my truck with my blood pressure cuff and stethoscope.
I got money in my FSA so I can spend some coin.