This Deluxe Fingertip Pulse Oximeter is very accurate and so simple to use. The display is easy to read and the screen rotates when you move. It's also CANADIAN !
I've bought a few these for my dad who has COPD, he likes to have one in every room of his apartment. They last a long time and are very durable. As well he used it along with the hospital ones to see how accurate it is and it was spot on. Great buy.