QALO SR-2 Smart Ring

QALO SR-2 Smart RingPrice, Battery Life, Sizes & Features

Last updated

The SR-2 is QALO's slimmer, second smart ring. It tracks sleep stages, heart rate, HRV, stress, SpO2 and skin temperature, predicts your period and fertile window, syncs with Apple Health and runs up to 5 days per charge. The app is free.
Price
$199.95
BATTERY
Up to 5 days
SIZE
2.2mm thick, sizes 6 to 14
WEIGHT
2.5g to 3.1g

Best for

Sleep.
Sleep stages, including naps, and a daily Sleep Score with no subscription.Confirmed: qalo.com
minimal-discreet.
A titanium ring 2.2mm thick that weighs 2.5g to 3.1g.Confirmed: qalo.com
Cycle tracking.
Period and fertile window predictions from skin temperature and heart rate, at no extra cost.Confirmed: qalo.com

Comparison

Compare smart rings

How it compares

Cost over 3 years

$199.95

Device price plus the three years of subscription this product requires.

Weight

2.5g

Grams on your finger. Lower is lighter.

Battery life

~5 days

How long it lasts on its own, away from a charger.

Cost over 3 years

Amazfit Helio Ring
$149.99
RingConn Gen 2 Air
$199
RingConn Gen 2
$299
RingConn Gen 3
$349
Samsung Galaxy Ring 1
$399.99

DeviceRequired subscription

Ring weights change with size. These are the size the maker quotes.

Battery life can vary based on usage, settings and firmware version.

If not this one

QALO SR-2 Smart Ring is our pick for sleep and cycle tracking. Where it does not lead, here is what does, and why you would switch.

  • If you train hard and want recovery, not stepsAmazfit Helio Ring

    It gives you readiness and recovery insights, and runs four days on a charge.

    $199.99
  • If you want the broadest health pictureRingConn Gen 3

    It tracks your heart, your sleep and your daily activity without stopping.

    $349
  • If workouts are the pointSamsung Galaxy Ring

    It tracks your walking and running, and runs up to fourteen days on a charge.

    $399.99

Most paired with

Everything it works with

What the QALO SR-2 works with

A smart ring that works with iPhone and Android.

Does the QALO SR-2 work with Android?

Works

The SR-2 works with Android phones running Android 7.0 or later through the free QALO app from Google Play.

What you need
The QALO app from Google Play; Android 7.0 or later.
See details and sources (2)

Last checked 2026-10-10.

Does the QALO SR-2 work with iPhone?

Works

The SR-2 works with iPhone through the free QALO app (iOS 15.1 or later) and syncs steps, active energy, sleep and heart rate to Apple Health.

What you need
The QALO app from the App Store; iOS 15.1 or later.
See details and sources (2)

Last checked 2026-10-10.

Quick answers

All FAQs

Quick answers

How much does the QALO SR-2 cost?
$199.95 at QALO's US store, in every size from 6 to 14 and in brushed gold or brushed silver. There is no subscription.
Does the QALO SR-2 need a subscription?
No. The QALO app is free and there are no subscription charges, including for the women's health features.
How long does the QALO SR-2 battery last?
QALO rates it at up to 5 days per charge with daily use. It charges in the included USB-C charging case, which has to be plugged in: it does not charge wirelessly.

Get QALO SR-2 Smart Ring updates

Email me when there's news.

Works with

Works

The SR-2 works with Android phones running Android 7.0 or later through the free QALO app from Google Play.

What you need
The QALO app from Google Play; Android 7.0 or later.
See details and sources (2)

Last checked 2026-10-10.

Works

The SR-2 works with iPhone through the free QALO app (iOS 15.1 or later) and syncs steps, active energy, sleep and heart rate to Apple Health.

What you need
The QALO app from the App Store; iOS 15.1 or later.
See details and sources (2)

Last checked 2026-10-10.

WorksWorked out from the maker's minimum

It works with every iPhone that runs iOS 15.1 or later, from the iPhone 6s on.

  • iPhone 18 Pro and iPhone 18 Pro Max: yes, on iOS 15.1 or later
  • iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max, iPhone Air and iPhone 17e: yes, on iOS 15.1 or later
  • iPhone 16, iPhone 16 Plus, iPhone 16 Pro, iPhone 16 Pro Max and iPhone 16e: yes, on iOS 15.1 or later
  • iPhone 15, iPhone 15 Plus, iPhone 15 Pro and iPhone 15 Pro Max: yes, on iOS 15.1 or later
  • iPhone 14, iPhone 14 Plus, iPhone 14 Pro and iPhone 14 Pro Max: yes, on iOS 15.1 or later
  • iPhone 13 mini, iPhone 13, iPhone 13 Pro and iPhone 13 Pro Max: yes, on iOS 15.1 or later
  • iPhone 12 mini, iPhone 12, iPhone 12 Pro and iPhone 12 Pro Max: yes, on iOS 15.1 or later
  • iPhone 11, iPhone 11 Pro and iPhone 11 Pro Max: yes, on iOS 15.1 or later
  • iPhone XR, iPhone XS, iPhone XS Max and iPhone X: yes, on iOS 15.1 or later
  • iPhone 8 and iPhone 8 Plus: yes, on iOS 15.1 or later
  • iPhone 7 and iPhone 7 Plus: yes, on iOS 15.1 or later
  • iPhone 6s and iPhone 6s Plus: yes, on iOS 15.1 or later
  • iPhone SE (2nd generation), iPhone SE (3rd generation) and iPhone SE (1st generation): yes, on iOS 15.1 or later
  • iPhone 17 Pro: yes, on iOS 15.1 or later
  • iPhone 17 Pro Max: yes, on iOS 15.1 or later
  • iPhone Air: yes, on iOS 15.1 or later
  • Any iPhone not listed: no, it cannot run that iOS version

Worked out from the maker's minimum ("iOS 15.1 or later") and Apple's list of the iPhones that run it, not a separate test. See the sources.

See details and sources (8)

Last checked 2026-10-10.

Most paired with

Does the QALO SR-2 work with Android?

Works

The SR-2 works with Android phones running Android 7.0 or later through the free QALO app from Google Play.

What you need
The QALO app from Google Play; Android 7.0 or later.
See details and sources (2)

Last checked 2026-10-10.

Does the QALO SR-2 work with iPhone?

Works

The SR-2 works with iPhone through the free QALO app (iOS 15.1 or later) and syncs steps, active energy, sleep and heart rate to Apple Health.

What you need
The QALO app from the App Store; iOS 15.1 or later.
See details and sources (2)

Last checked 2026-10-10.

What you need

Does the QALO SR-2 work with Android?

Works

The SR-2 works with Android phones running Android 7.0 or later through the free QALO app from Google Play.

What you need
The QALO app from Google Play; Android 7.0 or later.
See details and sources (2)

Last checked 2026-10-10.

Does the QALO SR-2 work with iPhone?

Works

The SR-2 works with iPhone through the free QALO app (iOS 15.1 or later) and syncs steps, active energy, sleep and heart rate to Apple Health.

What you need
The QALO app from the App Store; iOS 15.1 or later.
See details and sources (2)

Last checked 2026-10-10.

How it works

With a limit

It charges in the included USB-C charging case, which must be plugged in to a power source. It does not charge wirelessly.

What you need
The included charging case and cable, plugged in to power.
What works
Charging in the included case over USB-C.
Good to know
The charging case must be connected to a power source; it is not wireless.
See details and sources (2)

Last checked 2026-10-10.

Works

No subscription. The QALO app is free, with no subscription charges.

See details and sources (1)

Last checked 2026-10-10.

With a limit

QALO sells the SR-2 in the United States and Canada only for now.

What works
United States and Canada.
Good to know
Not sold outside the United States and Canada yet.
See details and sources (1)

Last checked 2026-10-10.

At a glance

QALO SR-2 Smart RingTHIS PRODUCTQALO SR-2 Smart RingRingConn Gen 2 AirCOMPARE WITHRingConn Gen 2 Air
Battery
Up to 5 daysConfirmed: QALO · Oct 10, 2026
Up to 10 daysConfirmed: RingConn (official) · Jul 12, 2026
Works with
iPhone (iOS 15.1 or later) and Android (7.0 or later), QALO appConfirmed: QALO · Oct 10, 2026
iOS + Android
Materials
Titanium alloy, brushed gold or brushed silverConfirmed: QALO · Oct 10, 2026
TitaniumConfirmed: RingConn (official) · Jul 12, 2026
Price
From $199.95
From $199
Fit and sizes
6 to 14Confirmed: QALO · Oct 10, 2026
6–14
Weight
2.5g (size 6) to 3.1g (size 13)Confirmed: QALO · Oct 10, 2026
2.5–4gConfirmed: RingConn (official) · Jul 12, 2026
Show 6 more specifications
Cycle tracking
Period and fertile window predictionsConfirmed: QALO · Oct 10, 2026
Unknown
Fsa hsa
YesConfirmed: QALO · Oct 10, 2026
Unknown
Hrv
YesConfirmed: QALO · Oct 10, 2026
Unknown
Sleep staging
Awake, light, deep and REM, plus napsConfirmed: QALO · Oct 10, 2026
Unknown
Stress
YesConfirmed: QALO · Oct 10, 2026
Unknown
Subscription
NoneConfirmed: QALO · Oct 10, 2026
None
More specs
Connectivity
Unknown
Bluetooth 5.0Confirmed: RingConn (official) · Jul 12, 2026
Size
Sizes 6 to 14Confirmed: QALO · Oct 10, 20268.0mm wide, 2.2mm thick
Sizes 6–14Confirmed: RingConn (official) · Jul 12, 2026

Buying decision

QALO SR-2 Smart Ring
No rush
QALO

QALO SR-2 Smart Ring

No new model soon

We don't expect a newer model soon, so there's no reason to wait for one.

Full price everywhere

None of the stores we check has it on sale yet.

What would make this a buy?

A meaningful discount or a return to a well-supported past low would change this recommendation.

About QALO

QALO

QALO makes silicone rings, the SR-2 Smart Ring and the SL-1 Smart Band, with one free app.

Visit QALO

What's in the box

What comes in the box with the QALO SR-2 Smart Ring?

Here is what you get when you open it.

SR-2 (QRNT Slim) smart ring
Charging case
Charging cable
Two silicone covers

From QALO's pages 1, 2. Checked Oct 10, 2026.

When to buy

No new model is close, so there's no need to rush.

Price historyStill collecting (1 of 7 days)
Stores we check1QALO

All smart ring prices

How we read this
  • We read store prices every day and keep every read. The price shown is the newest read from the retailer named.
  • A read older than 36 hours is never shown as the current price. It reads "last seen" and carries no buy link.
  • “30-day low” is the lowest of our own reads for this product in the last 30 days, not a retailer’s claim. We print the number of reads beside it, and we say nothing about a low until a product has a week of reads.
  • “Lowest known”, where it appears, is older price history from published reports and imports. It is shown only when it is lower than the 30-day low, and it is not counted as reads.
  • The verdict is worked out from the price, the history and whether a newer model is coming. It never depends on who pays us.

Current offers

QALO
$199.95
In stock
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Frequently asked questions

Questions about QALO SR-2 Smart Ring

Top questions

How much does the QALO SR-2 cost?
$199.95 at QALO's US store, in every size from 6 to 14 and in brushed gold or brushed silver. There is no subscription.
Does the QALO SR-2 need a subscription?
No. The QALO app is free and there are no subscription charges, including for the women's health features.
How long does the QALO SR-2 battery last?
QALO rates it at up to 5 days per charge with daily use. It charges in the included USB-C charging case, which has to be plugged in: it does not charge wirelessly.
What sizes does the QALO SR-2 come in?
Sizes 6 to 14. The SR-2 fits more snugly than a standard ring because of the raised sensors inside, so QALO recommends sizing up from your usual ring size. QALO also sells a sizing kit.
How thin and light is the QALO SR-2?
It is 8.0mm wide and 2.2mm thick, and weighs 2.5g in size 6 up to 3.1g in size 13.
What does the QALO SR-2 track?
Sleep stages (awake, light, deep and REM, plus naps), heart rate, HRV, stress, SpO2, skin temperature, and steps, calories and distance across 54 activity modes, plus your menstrual cycle.
Can I shower or swim with the QALO SR-2?
You can wear it in the shower and for shallow swims. It is not for deep diving or hot springs.
Does the QALO SR-2 track periods and ovulation?
Yes. It predicts the start of your period and your fertile window from skin temperature and heart rate, with symptom logging and a daily journal, at no extra cost.
What comes in the QALO SR-2 box?
The SR-2 ring, a charging case, a charging cable and two silicone covers, one black and one white.
What is the difference between the QALO SR-2 and SR-1?
The SR-2 is QALO's second smart ring, also sold as the QRNT Slim. QALO makes it 25% slimmer than the SR-1, with upgraded sensors.
Where can I buy the QALO SR-2?
QALO sells it in the United States and Canada. It is FSA/HSA eligible.
Is the QALO SR-2 a medical device?
No. QALO says the ring is not a medical device and is not meant to diagnose, monitor or treat any condition.

Using it

Do I need a subscription?
No, there is no subscription.
What does it cost?
It costs $199.95. That is the list price.
Does it work with my phone?
Yes, it works with an iPhone or an Android phone.
How heavy is it?
It weighs 2.5g to 3.1g. The weight varies by size or finish.
What is it made of?
It is made of titanium.
What ring sizes does it come in?
It comes in US sizes 6 to 14. Order a sizing kit first, because it is not the same fit as a jewellery ring.
How big is it on the finger?
It is 8mm wide and 2.2mm thick. It is thin enough to wear next to another ring.
Does it measure blood oxygen?
Yes, it measures your blood oxygen.
Does it track HRV?
Yes, it tracks your HRV.
Does it track sleep stages?
Yes, it tracks your sleep stages.
Does it read skin temperature?
Yes, it reads your skin temperature.
Can I pay with FSA or HSA?
Yes, you can pay with FSA or HSA money.

Sizing and fit

What sizes does it come in?
Ring sizes 6 to 14. Sizes 6 to 14; 8.0mm wide, 2.2mm thick

Price and models

Is there a newer one?
No. The QALO SR-2 Smart Ring is the current model.
How much does the QALO SR-2 Smart Ring cost?
List price: $199.95. Current price we last read at QALO: $199.95, October 10, 2026.

In the box

What's in the box?
SR-2 (QRNT Slim) smart ring, Charging case, Charging cable, Two silicone covers.
Apple Ring