Electronics · Audio, wearables, smart devices & accessories

The best smart rings of 2026

The best smart rings, compared on published specs: rated battery life, subscription cost, weight, water resistance, and which phones each one will talk to.

Start with an honest fact about this category: only four brands sell a smart ring on Amazon that we would put a name behind, and everything else on the search page is unbranded. So these five are the four brands, plus the previous-generation Oura, which Oura still sells alongside the new one. Every number below is the manufacturer's own.

Last updated

August 14, 2026

How we rank: the specs each maker publishes, read across the listing's own surfaces, and the third-party register where the category has one.

§ 01 · Top 5 Rankings

Our top 5 picks for smart rings

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EDITOR'S CHOICE

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Oura

Oura Ring 5

9.5/10JellyReviews Score

The Oura Ring 5 is the best smart ring you can buy, and the reason is that Oura shrank it: 40% smaller than the Ring 4, in Oura's own words, which matters more than any spec on a thing you wear every night. Battery is 6 to 9 days and it talks to both Android and iPhone. The membership is the catch and it is a real one: $5.99 a month, forever, and no other brand on this page charges you twice.

Pros

Oura calls it the world's smallest smart ring, and says it is 40% smaller than the Ring 4

6 to 9 days of battery, per Oura

All-titanium, which Oura says is more scratch-resistant than the previous generation

Oura says it tracks over 50 health metrics and connects to more than 40 apps, Strava and Natural Cycles among them

Works with both Android and iPhone, which the Samsung does not

HSA/FSA eligible

Cons

$5.99 a month for Oura Membership after the first month, which no other ring here charges

The sizing kit is a separate purchase, and Ring 5 sizing does not match other Oura generations

Oura describes the accuracy gain as "research-grade" but publishes no comparison against a reference device

No on-ring display and no haptics

Where to buy

Amazon

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BEST FOR ANDROID

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Samsung

Samsung Galaxy Ring

9/10JellyReviews Score

The Samsung Galaxy Ring is the one to buy if you carry an Android phone and refuse to pay a subscription. Samsung rates it at up to 7 days, one day short of the Oura Ring 4 and well short of the RingConn, and it charges you nothing after purchase, which over three years is 36 months of Oura Membership you never pay. Read the compatibility line before you buy: Samsung states plainly that it is Android only. An iPhone will not talk to it at all.

Pros

No subscription, ever, so over three years that is 36 months of Oura Membership you never pay

Up to 7 days of battery, per Samsung

Samsung Health integration, and the Energy Score pulls in data from your phone and watch too

A concave design that Samsung says minimises scratches

HSA/FSA eligible

Cons

Android only. Samsung is blunt about it, and it rules out every iPhone

The sizing kit is a separate purchase, though Samsung credits it back against the ring

No payment and no NFC

Samsung publishes no weight and no water-resistance rating for it, only "water resistant"

Where to buy

Amazon

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NAMES ITS SENSORS

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Oura

Oura Ring 4

8.8/10JellyReviews Score

The Oura Ring 4 is the one to buy if you want Oura and do not need the smallest body it makes. It runs the same app and takes the same membership as the Ring 5. Battery is 5 to 8 days and it survives 100m of water. Oura is unusually specific about the sensors, which is why we can name them: red and infrared LEDs for blood oxygen, green and infrared for heart rate and HRV. Buy this one unless the 40% size drop of the Ring 5 matters to you.

Pros

Still sold, and it runs the same app and takes the same membership as the Ring 5

Oura publishes 5 to 8 days of battery, more than the Samsung

Water resistant to 100m, which Oura states plainly

Oura says what each sensor does: red and infrared LEDs for blood oxygen, green and infrared for heart rate, HRV and respiration, plus a digital temperature sensor and an accelerometer

Six finishes, and it works with Android and iPhone

Cons

Bigger and heavier than the Ring 5: Oura publishes 3.3 to 5.2 g depending on size

The same $5.99 a month membership as the Ring 5

The sizing kit is a separate purchase, credited back against the ring

Where to buy

Amazon

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LONGEST RATED BATTERY

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RingConn

RingConn Gen 2 Air

8.5/10JellyReviews Score

The RingConn Gen 2 Air carries the longest battery rating on this page, and RingConn is specific about it: 10 days, against 6 to 9 for the Oura Ring 5. It is also the thinnest and lightest thing here at 2mm and 2.5g, and it survives 100m of water. Read RingConn's own wording carefully though. It promises no fee for standard features, which leaves the door open on the rest, and it is a smaller company than the two above it.

Pros

Up to 10 days of battery, the longest rating on this page, and RingConn says it charges fully in 90 minutes

2mm thick and 2.5g, which makes it the thinnest and lightest ring here

IP68, and RingConn says it is tested to 100m

Works with iPhone and Android, and it is HSA/FSA eligible

Cons

RingConn says "no subscription fee for STANDARD features", which is not the same as no subscription ever

The sizing kit is a separate purchase, and RingConn does not credit it back

A smaller brand than Oura or Samsung, so long-term app support is a bet

Far less published validation behind its sleep staging than Oura offers

Where to buy

Amazon

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Amazfit

Amazfit Helio Ring

8.2/10JellyReviews Score

The Amazfit Helio Ring is the one to buy if stress is what you want to track, because it is the only ring on this page with an EDA sensor: it reads the electrical activity of your skin rather than inferring stress from heart rate alone. It also has the toughest water rating here at 10 ATM, and it asks for no subscription. The cost is battery. Amazfit rates it at up to 4 days, less than half the RingConn. It makes most sense alongside an Amazfit watch.

Pros

The only ring here with an EDA sensor, which is what it reads stress from rather than heart rate alone

No subscription, and Amazfit says so in those words

10 ATM water resistance, the highest rating on this page

Titanium alloy outer ring, resin inner ring, 3.65 to 3.82 g depending on size

VO2 Max through the Zepp app, and it pairs with an Amazfit watch

Cons

Up to 4 days of battery, the shortest here by some margin

Amazfit's own spec page says a full charge takes about 1 hour 40 minutes, while its Amazon listing advertises "1.4-hour" charging

A smaller app ecosystem than Oura or Samsung

The sizing kit is a separate purchase

Where to buy

Amazon

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§ 02 · Side-by-side comparison

Compare all 5 at a glance

Rank	Product	Brand	Score	Best for
#1	Oura Ring 5	Oura	9.5	EDITOR'S CHOICE
#2	Samsung Galaxy Ring	Samsung	9	BEST FOR ANDROID
#3	Oura Ring 4	Oura	8.8	NAMES ITS SENSORS
#4	RingConn Gen 2 Air	RingConn	8.5	LONGEST RATED BATTERY
#5	Amazfit Helio Ring	Amazfit	8.2	-

§ 03 · Buying guide

How to choose the right smart ring

01Only one brand here charges you again after you have bought it

Oura charges $5.99 a month for Membership after a free first month, on both the Ring 5 and the Ring 4. Samsung, RingConn and Amazfit each state that they charge nothing after purchase, though read RingConn's wording: it promises no fee for standard features, which is not quite the same promise.

Run the number before you choose. Keep an Oura for three years and the membership is 36 monthly payments on top of the ring, and Oura ties that membership to your account rather than to the ring, so replacing the hardware does not reset it.

02Nobody includes the sizing kit. Order it before the ring

Smart ring sizes are not jewelry sizes, and they are not even consistent between generations of the same brand: Oura states that Ring 5 sizing differs from earlier Oura rings. Every maker on this page tells you to size first.

And every maker on this page sells the kit separately. Oura and Samsung credit the cost back against the ring; RingConn and Amazfit do not say they do. Wear the plastic sizer for a full 24 hours including overnight, because a finger is not the same size at 7am as it is at 9pm.

03What the battery figures promise, and what they leave out

RingConn rates the Gen 2 Air at 10 days, and it is the longest claim here. Oura rates the Ring 5 at 6 to 9 days and the Ring 4 at 5 to 8. Samsung says up to 7. Amazfit says up to 4, which is less than half the RingConn.

Note the shape of those numbers. Oura gives you a range because battery life falls with ring size and with how much you track; Samsung and Amazfit say "up to", which is the same admission worded more kindly. Assume the low end of any range.

§ 04 · FAQ

Questions about smart rings

They are good enough to show you a trend and not good enough to diagnose anything, and no maker here claims otherwise. All of them read your pulse optically from the underside of your finger, which is a technique that holds up well when you are still and struggles when you are moving hard. That is why every one of these is sold as a sleep and recovery tracker rather than a workout device. If you want heart rate during a hard session, wear a chest strap. If you suspect a sleep disorder, see a clinician.

Only Oura. Both the Ring 5 and the Ring 4 include the first month, then Oura charges $5.99 a month, and Oura ties that membership to your account rather than to the ring. Samsung states "No App Subscription". Amazfit states "No Subscriptions Required". RingConn is the one to read twice: it promises no subscription fee for standard features, which leaves the non-standard ones unspoken.

Buy the sizing kit first. Every brand on this page says its ring uses unique sizing that does not match a jewelry size, and Oura goes further and says the Ring 5 does not even match older Oura rings. Oura and Samsung both credit the kit back against the ring, so ordering it first costs you a few days rather than a second purchase. Wear the plastic sizer for 24 hours including a night, because fingers swell and shrink through the day, and a ring that spins on your finger will not read your pulse.

The RingConn Gen 2 Air, and it is not close: RingConn rates it at 10 days and says it recharges fully in 90 minutes. Oura rates the Ring 5 at 6 to 9 days and the Ring 4 at 5 to 8. Samsung says up to 7. The Amazfit Helio is last at up to 4 days, and Amazfit's own spec page puts a full charge at about 1 hour 40 minutes.

The verdict

The Oura Ring 5 is the best smart ring for most people. Oura shrank it 40% against the Ring 4, and on something you wear to bed every night that is worth more than any number on a spec sheet. The catch is the $5.99 a month, forever, and no other brand here charges it. If that irritates you, buy the Samsung Galaxy Ring, which asks for nothing after purchase, so long as you carry an Android phone. If battery is what you are optimizing for, the RingConn Gen 2 Air is rated at 10 days against 6 to 9 for the Ring 5, and it is the thinnest and lightest here. And if you want Oura without the newest body, the Ring 4 is still sold and it runs the same app.

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