My mother has interstatial lung disease. We got her a Zacurate brand pulse oximeter. https://photos.app.goo.gl/MVkCa7GH9NuEbgbL6 https://photos.app.goo.gl/MVkCa

My mother has interstatial lung disease. We got her a Zacurate brand pulse oximeter. https://photos.app.goo.gl/MVkCa7GH9NuEbgbL6 https://photos.app.goo.gl/MVkCa7GH9NuEbgbL6 Model 500E which was recently released then. It is rated at 2% +/- but their documentation says that their lab testing gives 1% +/- Does not have memory as I did not need that so you will be able to spot check and not have, for example, overnight readings.