UK Fingertip Pulse Oximeter, £0.99, bought from eBay. Failed to meet required CE standards. Claimed to be 'NHS approved'. Unbranded finger pulse oximeter, £4.66, bought from Wish.

Finger Watch Reads Oxygen Levels, Heart Rate We don’t know why you would need to measure your blood oxygen saturation levels, but if you do the Oxywatch ($140) promises to be the most convenient ...

Vital fingertip alarm that can protect lives: Doctors call for oxygen monitors to be prescribed to most vulnerable Doctors want pulse oximeters to be given to those in most urgent need for free ...