Pulse oximeters are small medical devices that let you keep tabs on key health measures such as your blood oxygen levels and pulse rate at home, and share them with your doctor or clinician if needed. If you're concerned about your respiratory health and think a pulse oximeter would be beneficial, speak to a medical professional first. Pulse oximeters are not a substitute for medical advice, and any at-home monitoring should be part of a clear health management plan. Wear them with: slim indigo denim, a sweatshirt and, if the weather calls for it, a proper winter coat.

Our investigation into cheap pulse oximeters sold on online marketplaces revealed a Wild West of uncertified models which didn't have the required CE marks to be sold in the UK, along with products claiming NHS endorsement, which they didn't have. Don't fall for false claims to be 'NHS approved', which you might spot in some pulse oximeter marketing info. Even in oxblood, however, this is still a utilitarian shoe that looks as good with hardy workwear as it does with relaxed tailoring. Pulse oximeters are useful monitoring devices to have at home for certain groups of people, such as those who are prone to respiratory failure, suffer from a chronic respiratory condition or require oxygen therapy. For these patients, a drop in oxygen levels could point to something much more serious. We've listed some of the phrases you might see when you're looking for a pulse oximeter, and what they mean:If you've been told by a medical professional that you should use a pulse oximeter at home, you need to make sure you're using it as effectively as possible to get the most accurate picture of your health. Read our guide to the best digital thermometers - we also explain the different types to help you choose Find out more about the debate over pulse oximeters and Covid-19 . How much do pulse oximeters cost?

Here, we explain how much pulse oximeters typically cost, the key features worth looking for and how to decide if buying one is right for you. Perfusion index Usually only pricier pulse oximeters will have this feature. It measures the ratio of pulsating to non-pulsating blood in your finger, and is used as an indication of how strong your blood flow is. Most people are unlikely to need this on a regular basis, and we don't test it in our lab.

Attach the clip of the pulse oximeter onto your index finger (the finger next to your thumb) or your middle finger, and wait for the readings to appear on the screen. But if you're after particular features (such as a perfusion index function or a larger, OLED screen), the extra functionality will usually cost you more. A pair of Redwing boots in burgundy looks slightly dressier than the same style in brown, and a factory floor is no place for a pair of rich, oxblood work boots. Not that you’d do manual labour in any of these. Save them for date night outfits and smart-casual offices.