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The Oura Ring 4 was our health and fitness device of the year, and it's 30% off for Black Friday

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Save up to $150 / £150 on the top smart ring

Oura Ring 4 size 10 close up
(Image credit: Future)
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The Oura Ring 4 is the trendy, high-tech fitness device that loads of celebrities have been spotted wearing, from athletes like NBA All-Stars to the likes of Gwyneth Paltrow and Jennifer Aniston. I even named it my health and fitness device of 2025.

Now you can get it for less: the Oura Ring 4 in Titanium Gold is discounted from $499 to $349 at Amazon US. That's a 30% saving, or $150. The same 30% discount applies to its Titanium Rose Gold finish.

In the UK, it's the same thing: The Oura Ring 4 in Titanium Gold and Rold Gold has been reduced from £499 to just £349 at Amazon, while other colors like silver have been reduced from £349 to £249 at Amazon.

Today's best Oura Ring 4 Black Friday deal in the US

Oura Ring 4 (Titanium Gold)
Oura Ring 4 (Titanium Gold): was $499 now $349 at Amazon

Save 30% on the Oura Ring 4 in its Titanium Gold finish. It's a classic wedding band-style color for the ring, but there's nothing old-fashioned about the rest of the ring: inside, it's cutting-edge with redesigned heart rate, skin temperature, and motion detector sensors.

Also available in Titanium Rose Gold

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Oura Ring 4 (Black)
Oura Ring 4 (Black): was $349 now $249 at Amazon

A similar 29% ($100) saving on the Oura Ring 4 in Black. It's the same basic ring inside as the Gold version (well, it's anything but basic, but you know), but the finish is different. The Ring also packs automatic workout detection, an AI-powered chatbot with access to all your health information, women's cycle tracking, and even a Symptom Radar feature that predicts when you're getting sick.

Also available in Silver

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Today's best Oura Ring 4 Black Friday deal in the UK

Oura Ring 4 (Titanium Gold)
Oura Ring 4 (Titanium Gold): was £499 now £349 at Amazon

The same great deal on the US site is available in the UK: save 30% on the Oura Ring 4 in its Titanium Gold finish, equating to £150.

Also available in Titanium Rose Gold

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Oura Ring 4 (Black)
Oura Ring 4 (Black): was £349 now £249 at Amazon

Again, even though the currencies are different, the discounts remain the same as the US: a Black or Silver Oura Ring 4 costs £100 less over the Black Friday period.

Also available in Silver

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Tiny fitness trackers that monitor heart rate, movement, and sleep from your finger rather than your wrist have skyrocketed in popularity – and quality – in recent years.

The Samsung Galaxy Ring, Oura's main competitor, doesn't quite have as many features as the Oura Ring 4, but it is subscription-free, so it comes top of our best smart ring guide by a hair. Significant discounts on the Oura Ring 4 upset that value-for-money balance of power.

At these prices, I'd recommend the Oura over the Samsung.

Do I need to buy a sizing kit?

Not if you know your ring size, or the ring size of the person you're buying one for. However, if you're not sure, you're better off buying a sizing kit at the same time as, or before, you buy an Oura Ring so you can return it and grab the correct size if needed.

Buying a $10 / £10 sizing kit provides a $10 / £10 credit towards buying an Oura Ring 4, so you effectively reclaim your purchase. However, even though the sizing kit is full-price in the US, the UK deal has the sizing kit at 50% off, while retaining the full £10 credit towards an Oura Ring, saving you an additional £5. Clever!

Oura Ring 4 sizing kit
Oura Ring 4 sizing kit: $10 at Amazon

US deal: When you buy this sizing kit, you'll be able to check the exact Oura Ring 4 size you or your gift recipient will need, and get $10 credit towards a new Oura Ring.

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Oura Ring 4 sizing kit
Oura Ring 4 sizing kit: was £10 now £4.50 at Amazon

UK deal: Buying a sizing kit is actually better in the UK: although the sizing kit is 50% off, you still get the full £10 credit on an Oura Ring 4, saving you an extra £5. Note these sizing kits don't work with the Oura Ring Gen 3, as they're designed differently without the Gen 3's inward-protruding skin-contact nodes.

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US: Shop more of today's best Black Friday sales

UK: Shop more of today's best Black Friday sales

Matt Evans
Matt Evans
Senior Fitness & Wearables Editor

Matt is TechRadar's expert on all things fitness, wellness and wearable tech.

A former staffer at Men's Health, he holds a Master's Degree in journalism from Cardiff and has written for brands like Runner's World, Women's Health, Men's Fitness, LiveScience and Fit&Well on everything fitness tech, exercise, nutrition and mental wellbeing.

Matt's a keen runner, ex-kickboxer, not averse to the odd yoga flow, and insists everyone should stretch every morning. When he’s not training or writing about health and fitness, he can be found reading doorstop-thick fantasy books with lots of fictional maps in them.

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