Top critical review
May not work well on older people
Reviewed in Australia on 31 May 2020
I bought this and also bought a different brand from eBay. This model has more trouble than the other in reading my elderly father. Most times doesn't show a reading, particularly in the morning (cold hands?) and on the thicker of his fingers. The two units never agree, and this one tended to read SpO₂ higher.
This one did however come with batteries, and did not have a loose battery cover like the other.