Oura Ring 4 Smart Ring
Last updated: 4 October 2026
The Oura Ring 4 is a titanium smart ring that tracks your sleep, heart rate, activity and stress from your finger, with no screen and up to eight days between charges. Oura has since launched the smaller Oura Ring 5, but still lists the silver Ring 4 at £349, and most of the app's insights need a membership at £5.99 a month or £69.99 a year. On 4 October 2026 Amazon UK listed the silver Oura Ring 4 at £199, sold by Amazon, with delivery quoted for 8 to 10 December.
Buy the Oura Ring 4 on Amazon UK, £199
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What the Oura Ring 4 tracks
Sensors on the inside of the ring read your heart rate and heart rate variability around the clock, along with your breathing rate, skin temperature trends, blood oxygen and movement. Oura says the pulse signal at the finger is much stronger than at the top of the wrist.
The Oura app turns those readings into daily scores for sleep, readiness and activity, and breaks your night into sleep stages. Oura states that the ring is not a medical device and is not meant to diagnose or treat anything.
There is nothing to look at on the ring itself. Everything appears in the app on your phone, so it suits people who want the data without another screen buzzing at them.
Key facts
- Price: £349 direct from Oura (silver); £199 on Amazon UK on 4 October 2026, sold by Amazon, with December delivery
- Membership: £5.99 a month or £69.99 a year, needed for full use of the app
- Material: titanium
- Battery: up to eight days, according to Oura
- Water resistance: to 100 metres, so it can be worn in the shower and the pool
- Sizes: 4 to 15
- Tracks: heart rate, heart rate variability, breathing rate, temperature trends, blood oxygen, sleep stages and activity
- Rating: 4.2 out of 5 from 8,871 ratings on Amazon UK
Who it suits
- People who will not sleep in a smartwatch: a ring is smaller and lighter on the hand overnight.
- Anyone tracking recovery: the daily readiness score is built from the overnight readings, so it is there when you wake up.
- People who want health data without notifications: there is no screen, so nothing lights up during a meeting.
If you would rather have a screen on your wrist, our Fitbit Versa 4 page covers a GPS fitness smartwatch, and the Pixel Watch 4 review looks at Fitbit sleep tracking on a full smartwatch.
The limits
The Ring 4 is no longer Oura's newest ring. The Oura Ring 5, which Oura says is 40% smaller, costs £399 in silver, so the Ring 4 is now the cheaper, older model.
The membership adds to the cost. Without it the ring works with limited features only, so budget £69.99 a year on top of the ring if you pay annually.
Sizing matters more than with a watch. Oura recommends trying its sizing kit before you buy, and Amazon's listing title says the same. Oura says its sizes differ from standard ring sizes and has no half sizes, so do not guess from a ring you already own.
The Amazon price comes with a wait. On 4 October 2026 the £199 listing quoted delivery for 8 to 10 December, more than two months away, while buying direct from Oura costs £150 more.
Where to buy the Oura Ring 4 in the UK
Amazon UK sells the silver Oura Ring 4 in sizes 4 to 15, sold by Amazon with 30-day returns. The Oura Ring 4 page on Oura's site lists every finish, the membership terms and the free sizing kit.
FAQs
How much is the Oura Ring 4 in the UK?
Oura lists the silver ring at £349. Amazon UK listed it at £199 on 4 October 2026, with delivery quoted for December.
Do you have to pay a subscription for the Oura Ring 4?
For full use, yes. Oura membership costs £5.99 a month or £69.99 a year, and without it the ring has limited functionality.
How long does the Oura Ring 4 battery last?
Up to eight days, according to Oura, depending on ring size and settings.
Can you swim with the Oura Ring 4?
Yes. Oura rates it water resistant to 100 metres.
Is there a newer Oura Ring?
Yes. Oura now sells the Oura Ring 5, at £399 in silver. The Ring 4 is still listed at £349.
How do I find my Oura Ring size?
Use Oura's free sizing kit before you order. Oura says its sizes differ from standard ring sizes and there are no half sizes.
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