Circular Ring 2 review: Breaking new smart ring ground

Finest Costs Right now: Round Ring 2

The Round Ring 2 is a great ring that isn’t happy with merely being a substitute for the Oura Ring 4 with out the added subscription. This can be a ring that desires to interrupt new floor by way of what a wise ring could be able to.

This the primary sensible ring to incorporate an ECG sensor, with blood stress insights and a glucose tends on the best way too. This can be a sensible ring that doesn’t simply need to make up the numbers.

Round’s earlier efforts have didn’t impress, nevertheless. However with uncertainty hanging over a few of its rivals as a consequence of patent disputes with Oura, may Round steal a march and develop into the sensible ring to get as a substitute of Oura?

I’ve been sporting the Ring 2 for a month now to seek out that out.

Design & Construct

• Out there in 4 colors
• IP68 water resistance
• Comes with transportable charging case

The Ring 2 provides you a decide of obsidian black, rose gold, gold or silver colourways. By way of sizing, Round covers US sizes from 6-14.

There’s additionally a digital sizing equipment you should utilize to get the very best match, which ought to be one the place the ring suits comfortable sufficient in order that it doesn’t spin round an excessive amount of in your finger to disrupt monitoring.

Mike Sawh

I had the Ring 2 in the identical measurement because the Ring, Good Ring Slim and a bunch of different sensible rings I’ve additionally examined, together with the Oura Ring 4 and the Samsung Galaxy Ring. It’s actually a lot nicer-looking than the Round Ring Slim. It’s additionally much less liable to selecting up scratches. Ditching the interchangeable shells from the primary Ring was an excellent transfer to make.

It’s a titanium ring, matching the sunshine but sturdy metallic most sensible rings have opted for. There’s a pleasant sheen to the ring’s exterior with a sensor bump that, whereas it doesn’t fully disappear, additionally doesn’t make it uncomfortable to put on.

There’s a small round emblem to remind you of the right method to put on it. I’ve been sporting one on one hand and the Oura Ring 4 on the opposite. The scale, thickness and common presence in your arms is analogous. You do exactly discover the sensor bump much less on the Oura.

Mike Sawh

Round sticks with a design that has an IP68 ranking for mud and water resistance, in order that’s not the strongest degree of safety towards water for a wise ring, although Round says it’s “protected for swimming, showering, and each day put on.”

It’s good to see that Round has modified its strategy to a charging answer for its newest ring. It’s ditched the small, keychain-style one it included with its Ring Slim for a charging case.

It has a really totally different look from those included with Samsung and RingConn rings. It’s accomplished the job of conserving the ring in place throughout charging and provides a built-in battery to allow you to cost on the transfer. Extra on that within the battery life part later.

Well being Options

• ECG measurements
• PPG coronary heart price and SpO2 monitoring 
• Remedy reminders

Once you dive into what’s a reasonably busy Round smartphone companion app (suitable with each iOS and Android), you’ll respect simply how a lot is on provide with the Ring 2.

That is nonetheless a wise ring that has the required sensors to trace each day exercise and monitor sleep, together with metrics like coronary heart price and SpO2. It’s additionally added options to make it a greater match to be used throughout some exercises. It now desires to maintain a more in-depth eye on monitoring your emotional state, too.

Mike Sawh

Let’s begin with the large one each for Round and sensible rings normally. That is the primary sensible ring to incorporate an ECG sensor and options electrodes on the skin of the ring to allow you to take on-the-spot measurements.

These measurements analyse coronary heart price rhythm and may search for irregular ones. The sensor and algorithm used to do that have each been cleared by the FDA to detect indicators of atrial fibrillation.

Taking a studying is finished by putting the index finger of your reverse hand on the highest of these electrodes. After a 45-second measurement, the studying might be categorized. These will decide that rhythm is regular or present indicators of bradycardia, tachycardia or atrial fibrillation. 

Fortunately, all of my readings detected a traditional coronary heart price rhythm, although curiously said a confidence between 60-70%. Round, like plenty of tech manufacturers making comparable wearables, states that this characteristic isn’t a prognosis and doesn’t change a medical gadget, regardless of sounding very very similar to a medical characteristic.

Mike Sawh

It can even allow you to generate reviews to indicate a medical skilled, so it may a minimum of assist together with your well being care. The readings a minimum of appeared correct when in comparison with different ECG-reading gadgets just like the Apple Watch.

Past ECG measurements, there’s an entire lot extra on provide right here. You may examine dwell measurements of your coronary heart price and SpO2 ranges, arrange alerts for top and low coronary heart price or SpO2 ranges (or each) and arrange reminders to take treatment.

I believe the UI within the app must be cleaner and fewer cluttered than it at present is to make absorbing this information lots simpler.

Health & Wellness Monitoring 

• Monitor steps, sleep, coronary heart price and emotional state
• Devoted sports activities modes
• Sleep and Power evaluation insights

The Round Ring 2 provides you what have gotten characteristic staples of all sensible rings.

That is one thing you may take to mattress extra comfortably to trace your sleep than a smartwatch. You may put on all of it day and let it maintain tabs in your actions and metrics like coronary heart price.

It does these issues and extra in an excellent vogue. Nonetheless, in the event you don’t sync information regularly, it could appear to take an age to sync with the app.

Mike Sawh

For sleep, you’ll generate sleep scores, get a breakdown of sleep levels and it’ll file sleep period as nicely. It’ll show information like sleep high quality on graphs to see how that adjustments or possibly even stays fixed.

There’s additionally devoted graphs for HRV, respiratory price, temperature and SpO2 ranges. I’ve been sporting it alongside two totally different sleep trackers. It supplied fairly comparable sleep period information to gadgets like Oura, in addition to recognising sleep begin and wake-up instances.

Sleep scores have been comparable, and once I napped, it managed to choose them up. At its core, there’s a robust sleep monitoring efficiency.

Mike Sawh

Each day exercise is damaged right down to steps, cardio factors and also will have a look at metrics like VO2 Max and HR max to evaluate Round’s vitality scores. This rating goals to present you a greater sense of vitality ranges to deal with your day.

Sleep scores may also affect this rating. Consider it like Oura’s Readiness scores and comparable metrics on provide on the Google Pixel Watch 4, Samsung’s smartwatches and lots of Garmin watches. a few of that information in isolation and each day step counts totals have been fairly comparable on most days in comparison with two different revered and dependable health trackers.

There’s a devoted sports activities monitoring mode, which helps you to decide from a variety of sports activities profiles, together with ones that might profit from piggybacking off your cellphone’s GPS sign to raised observe your actions exterior.

I’ve used it for outside runs and indoor exercises like rowing and biking and the outcomes have been blended. I’ve not examined a wise ring that I actually suppose does an excellent job of monitoring coronary heart price throughout train and that hasn’t modified right here.

Mike Sawh

Past exercise, there are options on provide on the wellness entrance which has develop into extra frequent.

A coherence mode tracks your coronary heart price variability to assist get you right into a clearer frame of mind. There’s an excellent vary of guided respiratory workout routines on provide on the app and a spot to regulate stress ranges and even see predictions on stress primarily based on earlier stress information historical past. 

This ring doesn’t shortchange you in options, however isn’t the very best at presenting them.

Battery Life & Charging

• As much as 7 days battery life
• Transportable charging case
• Totally costs in half-hour

The Round Ring 2’s strategy to battery, very similar to earlier Round Rings, is an uncommon one.

You’ve got the choice of battery modes – there’s Efficiency mode, which will get you probably the most correct monitoring on provide and samples information at the next frequency than the Energy battery mode.

The facility saving mode samples coronary heart price information at a decrease frequency and means you’ll additionally dwell with out richer sleep information and fewer detailed information monitoring total.

Mike Sawh

The utmost battery life you’ll get pleasure from is 7 days, which is one much less day than Oura, the identical because the Samsung Galaxy Ring and wanting the comparatively mammoth 10-12 days that the RingConn Gen 2 can maintain going for. 

Like earlier Round sensible rings, choosing the efficiency mode does see a way more noticeable drain every day. In that efficiency mode, the battery lasted 4-5 days. That’s higher than earlier than, however not fairly nearly as good as the very best sensible ring battery performers.

Moreover, there’s a energy saving mode, which is designed to protect battery once you’re not utilizing the ring for lengthy intervals and isn’t merely draining battery in between the time earlier than you drop it into the charging case once more.

You’ll get a cellphone notification to let you know when it’s operating low and now you will have a extra handy method to cost it again up. Like Samsung and RingConn, you now have a charging case that may energy the ring again up in simply half-hour.

It’s infinitely extra handy than the keyring USB stick setup of the Round Ring Slim. It’s not fiddly, you may take it anyplace and it holds sufficient battery energy to cost the Ring 2 3 times.

Worth & Availability

The Round Ring 2 launched in August 2025 and is priced at £280/$379 for the most cost effective mannequin. Like earlier Round Rings, there’s no added subscription wanted to achieve full entry to options and information.

Nonetheless, Round might be making some future options out there by a mannequin the place you’ll have to amass a certain quantity of its digital Round Cash forex to get them as a substitute. Additionally, you will have the choice to buy these cash to fast-track entry, which is able to embrace an upcoming blood stress traits characteristic.

The most affordable value will get you the black examined right here, however different fashions are costlier. Silver prices £360/$449 and the 2 gold choices are an much more sizeable £440/$549.

You should purchase the Round Ring 2 from the official retailer.

Mike Sawh

How does it measurement as much as the competitors? Let’s begin with the best-known, the Oura Ring 4. That ring does depend on a month-to-month or annual subscription, plus anyplace from £349/$349 to choose up the ring.

The subscription-free Samsung Galaxy Ring sits at £399/$399, so each Samsung and Oura rings are costlier compared, although Samsung doesn’t require a subscription.

The Ultrahuman Ring Air prices £329/$349 whereas the RingConn Gen 2 sits at $299. These two rings on the time of writing have been set to be pulled from sale within the US after Oura gained a patent infringement submitting towards the 2 new sensible ring newcomers. That might, after all, change sooner or later.

That would go away Oura, Samsung, Amazfit and Round as the primary gamers within the sensible ring house. Samsung, although, has seen current issues with battery swelling on the Galaxy Ring.

Do you have to purchase the Round Ring 2?

I examined the unique Round sensible ring and I didn’t even full my testing as a consequence of so many points. I had extra luck with the Round Ring Slim, nevertheless it nonetheless couldn’t compete with different sensible rings.

With the potential that Ultrahuman and RingConn rings could possibly be banned from the US, that leaves a a lot smaller competitors for the Round Ring 2. You’ve primarily received the Oura Ring 4, Samsung Galaxy Ring and the Amazfit Helio Ring.

I might nonetheless say the Oura Ring 4 is the standout sensible ring after my time with the Round Ring 2. It’s actually the very best Round ring I’ve examined and whereas Samsung’s software program feels a bit cleaner compared, Round’s software program is clearly constructed for a wise ring and will meet up with a while.

For those who’re in search of a subscription-free sensible ring, then that is actually up there as a high choice.

Specs

• As much as 7 days battery life
• ECG and Optical coronary heart price sensor
• Tracks blood oxygen, pores and skin temperature 
• Tracks sleep and steps
• Titanium design
• 2.55mm thick
• Weighs 2-3g (measurement dependent)
• iOS and Android suitable