We may earn a commission when you buy through links on this page, at no extra cost to you. As an Amazon Associate we earn from qualifying purchases.
Short answer: get the Ultrahuman Ring PRO if you hate charging and hate monthly fees.
Get the Oura Ring 5 if you want the smallest, lightest ring and don’t mind paying $5.99 a month for the full app.
That’s really the whole decision for most people… the rest of this page helps you check which camp you’re in.
One heads-up first: “Ultrahuman vs Oura” in the US today means Ring PRO vs Ring 5, because the older Ultrahuman Ring AIR is still blocked from US import.
How we compared them
We didn’t test these rings ourselves.
We pulled specs from Ultrahuman’s and Oura’s own spec pages, fees from their pricing and support pages, and ratings from the Amazon US listings (checked November 11, 2026).
Then we turned those numbers into the things you’ll actually feel: how often you charge, what you pay over three years, and what happens if your phone is away for a while.
Ultrahuman Ring PRO vs Oura Ring 5 at a glance
| What matters | Ultrahuman Ring PRO | Oura Ring 5 |
|---|---|---|
| Battery per charge (maker claim) | Up to 15 days (about 12 in Turbo Mode) | 6-9 days |
| Charges per year (our math) | About 24-30 | About 41-61 |
| Charging case | Included, up to 45 days total | Sold separately ($99) |
| Data stored on the ring | Up to 250 days | Up to 3 days |
| Thickness / weight | 2.65 mm / 3.3-4.8 g | 2.28 mm / from 2 g |
| Sizes | 5-14 | 6-13 |
| Water resistance | 100 m (328 ft) | 100 m (328 ft), IP68 |
| Blood oxygen (SpO2) | Not listed on the maker’s spec table | Yes, with membership |
| Required subscription | None (some add-ons cost extra) | $5.99/month or $69.99/year for the full app |
| Amazon US rating (Nov 2026) | 4.0/5 from 2 ratings (new listing) | 4.4/5 from 2,699 ratings |
“Charges per year” is simple division: 365 days split by the maker’s battery claim.
Your real number depends on ring size and settings, and both makers say so.
What three years really costs you
Over three years, a Silver or Black Oura Ring 5 with the yearly plan costs about $130 more than the Ring PRO.
Here’s the math with list prices from both makers (November 2026):
- Ultrahuman Ring PRO: $479, charging case included, no required fee. Three-year total: $479.
- Oura Ring 5 Silver or Black: $399 plus $69.99 a year. Three-year total: $608.97.
- Same Oura with its $99 charging case: $707.97.
- Oura Ring 5 in Gold, Deep Rose, Stealth or Brushed Silver: $499 plus the plan, so $708.97 without the case.
There’s a catch on the Ultrahuman side.
Its app sells optional add-ons called PowerPlugs, like Cardio Adaptability at $24 a year and Cycle & Ovulation Pro at $39 a year.
If you’d buy several of those, the gap shrinks fast.
And skipping Oura’s plan isn’t a real option: without it, the app only shows your three daily scores (Sleep, Readiness, Activity) and battery level.
Amazon prices move around, so check the current price before you do your own math.
Ultrahuman Ring PRO: best if you hate charging and fees
This is the ring for people who forget chargers and are tired of subscriptions.
It runs up to 15 days per charge, and the included case tops it up to about 45 days away from a wall plug.
It also stores up to 250 days of data on the ring, so a long trip without your phone won’t leave gaps.
Skip it if you want the slimmest ring, or if blood oxygen tracking matters to you.
Pros
- Roughly half as many charges per year as the Oura
- Charging case comes in the box
- Widest size range here (5-14)
Cons
- Thicker and heavier: 2.65 mm and up to 4.8 g, and Tom’s Guide measured about 4.8 mm at the sensor bump
- Only 2 Amazon US ratings so far, so there’s little owner feedback to lean on
Oura filed a new patent lawsuit against the Ring PRO in October 2026.
As of today no court has blocked sales, and Ultrahuman says it keeps selling in the US.
Order the sizing kit first, because Ultrahuman sizes don’t match normal ring sizes.
Check price on Amazon: Ultrahuman Ring PRO
Check price on Amazon: Ring PRO Sizing Kit
Oura Ring 5: best if comfort and a proven app come first
This is the ring for people who want to forget they’re wearing it.
At 2.28 mm thick and from 2 grams, it’s the smallest ring Oura has made, and Oura calls it the smallest smart ring in the world.
It has 2,699 Amazon US ratings at 4.4/5, so you’re buying something lots of owners already wear.
Skip it if your ring size is 5 or 14 and up, or if a monthly fee bugs you.
Pros
- Thinnest and lightest of the two
- Blood oxygen tracking included with the membership
- Big owner base: Amazon’s review summary praises the look, fit and sleep tracking
Cons
- Full app needs $5.99/month or $69.99/year
- Only about 3 days of data fit on the ring, so sync your phone often
Amazon’s review summary also flags mixed opinions on size and on value for money.
Oura Ring 5 sizes differ from Ring 4 sizes, so use the Ring 5 sizing kit even if you owned an older Oura.
Check price on Amazon: Oura Ring 5
Which ring fits your habits
Pick the line that sounds most like you.
- You travel a lot or go off-grid: Ring PRO, because 250 days of on-ring storage and the case mean no data gaps.
- You forget chargers: Ring PRO, at roughly 24-30 charges a year instead of 41-61.
- You have slim fingers or sleep with your hands curled: Oura Ring 5, the thinner and lighter band.
- Your ring size is 5 or 14: Ring PRO, since Oura Ring 5 only comes in 6-13.
- You want blood oxygen readings: Oura Ring 5.
- You already pay for Oura: Oura Ring 5, because your membership moves to the new ring.
If you’re coming from an older Oura, our Oura Ring 3 vs 4 comparison covers the earlier generations.
Want something on your wrist instead? Browse our luxury smartwatch picks.
FAQ
Is Ultrahuman better than Oura?
Not across the board.
Ultrahuman wins on battery, storage and fees, while Oura wins on size, weight and owner track record.
Does Ultrahuman need a subscription?
No, core tracking like sleep, heart rate and HRV is free.
Some PowerPlug add-ons cost extra.
Can you still buy Ultrahuman in the US?
Yes, the Ring PRO is sold in the US after a March 2026 Customs ruling cleared it.
The older Ring AIR is still blocked, and Oura’s new October 2026 lawsuit hasn’t stopped Ring PRO sales so far.
Can you shower or swim with them?
Yes, both are rated water resistant to 100 m (328 ft).
Oura says the rating covers saunas and water sports but not diving, and that you should dry the ring before charging.
Sources
All checked November 11, 2026.
- Ultrahuman Ring PRO FAQ and spec table: ultrahuman.com/us/ring-pro/faq (battery, storage, thickness, weight, sizes, water resistance)
- Ultrahuman Ring PRO vs AIR: ultrahuman.com/blog/ultrahuman-ring-pro-vs-ring-air ($479 price, Turbo/Chill battery)
- Ultrahuman PowerPlugs pricing as reported by Kudomax and Lifehacker
- Oura Ring 5 specs: ouraring.com/store/rings/oura-ring-5 and Oura Support: Discover Oura Ring 5 (size, battery, storage, sizes, water rating)
- Oura prices and membership: ouraring.com/blog/oura-ring-what-to-know-2026
- Oura charging case $99: Lifehacker
- Ring PRO sensor-bump thickness: Tom’s Guide
- US legal status: CBP ruling H354023, TechCrunch, Oct 22, 2026, the5krunner, Oct 23, 2026
- Amazon ratings and review summaries: Amazon listing ASIN B0H1N5VLSN (Ultrahuman Ring PRO), Amazon listing ASIN B0GRJZZ885 (Oura Ring 5)