Yes, we have just bought one off ebay. We acquired it because DH had collapsed lung as a side effect of bypass surgery and was on oxygen for several weeks. It is reassuring, if he is having a breathless day, to check and discover, his blood oxygen is within normal bounds.
A doctor on the R4 programme 'Inside Medicine' last week was recommending that every household should have one, much as they would have a thermometer.
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