Discover which retailers you can trust in our expert guide on the best and worst shops . Are there NHS approved pulse oximeters?

Once the numbers have stopped changing and reached a steady average, record your readings. You can then remove the pulse oximeter and put it away until you need it next. 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.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. 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. The plain, easy-wearing nature of Derby shoes makes them perfect for smart-casual wardrobes that regularly mix good-quality denim with tailored trousers. The simple design can also handle the flash of colour that oxblood brings, especially on chunky modern soles.

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. 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. We've listed some of the phrases you might see when you're looking for a pulse oximeter, and what they mean: Don't fall for false claims to be 'NHS approved', which you might spot in some pulse oximeter marketing info. OLED screen Most devices have basic LCD screens, but a handful have slightly more advanced OLED screens.

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SpO2 reading A measurement of how much oxygen is in your blood. Every pulse oximeter has this feature, as it's the main thing they're designed to measure. A SpO2 reading of less than 92% (or 88% for those with chronic obstructive pulmonary disease) can suggest someone is seriously ill and needs immediate medical attention.

Ensure your hand is warm to the touch, then sit down and let it rest on your chest for about five minutes before switching on the pulse oximeter.The burgundy shade of oxblood goes with just about any trouser colour, so it’s a great versatile alternative to have in your wardrobe. A pair of classic denim or white jeans work well with oxblood boots, and although the burgundy hue gives an autumnal feel, it can work across seasons when paired with light and white denim. It's important a pulse oximeter does its job accurately and efficiently, and is easy for you to use and understand. To prove that oxblood shoes deserve a spot in your rotation, we’ve found the most wearable types of shoes you can find in the shade. You deserve at least one of them. Loafers