R-RING Smart Sleep & Health Ring

R-Ring Sleep & Health TrackerSilver / Sizing Kit

$280.00

$349.00

Designed for Life.

Engineered for Recovery.

Most smart rings force you to choose: premium features locked behind monthly subscriptions, or ecosystem constraints that demand specific phones. Your health data shouldn't require a loyalty program.

The Problem

R-RING delivers high-frequency monitoring that captures data multiple times per second—real-time stress detection and precise recovery insights, not delayed estimates. Medical-grade sensors, AI-powered insights, seamless cross-platform sync. No subscriptions. No barriers.

Our Approach

Precision-crafted titanium steel. Lighter than a sheet of paper at 2.9 grams. Slimmest on the market at 6.5mm wide. Designed so you forget you're wearing it while you sleep. 10ATM water resistant. It adapts to your life—not the other way around.

The Promise

What Q-Ring Tracks While You Sleep

Sleep Stages

See exactly how much time you spend in Light Sleep, Deep Sleep, and REM. Deep sleep repairs your body—rebuilding cells and renewing skin. REM processes stress. High-frequency monitoring captures every transition for accurate data, not guesswork.

Sleep Quality Score

One simple number that tells you how well you slept. Above 85? You're recovered. Below 70? Your body needs more rest tonight.

What Disrupted Your Sleep

R-RING detects every toss and turn, tracking patterns over time. Always wake at 3am? Never get enough deep sleep? See the pattern, fix it, optimize recovery.

Stress Level

Track your nervous system activity throughout the night. High stress blocks deep sleep and slows recovery. R-RING measures your body's stress response so you can identify triggers and restore balance.

Body Temperature

Your temperature naturally drops when you fall asleep and rises before you wake up. If this rhythm is off, it affects everything—your sleep quality, your recovery, your skin, even your hormones.

Heart Rate Overnight

Your heart rate should drop significantly during deep sleep—that's full recovery mode. If it stays elevated, R-RING catches it in real-time—stress, late caffeine, or early signs of illness.

Intelligence That Grows With You

Daily Readiness Score

Wake up to one simple number (0-100) that tells you exactly how hard to push today—or when to rest and prioritize recovery.

Sleep Stage Breakdown

See exactly how much Light, Deep, and REM sleep you're getting. No subscription required to unlock this data.

Stress Rhythm Tracking

Monitor your heart rate variability throughout the day with high-frequency precision to spot stress before it becomes burnout.

Women's Cycle Prediction

Track temperature shifts to predict your period within 1 day and identify your fertile window.

Lighter Than Air

At 2.9 grams, R-RING weighs less than a nickel—lighter than a sheet of paper. You'll forget it's there.

Titanium Tough

Medical-grade titanium steel with scratch-resistant PVD coating built to last.

Up to 7 Days Battery

Charge once a week. Track your recovery continuously without hunting for cables every night.

10ATM Water Resistant

Swim, shower, dive. Tested to 100 meters depth.

No Phone Required.
No Subscription Ever.

Works With Any Phone

iOS 10+, Android 5+, or scan into WeChat. Your choice.

Every Feature Unlocked

Sleep staging, HRV analysis, cycle tracking—everything works from day one. No monthly fees. No paywalls.

Your Data Stays Yours

End-to-end encryption. Export or delete anytime. GDPR compliant.

Don't Just Take Our Word for It

5/5

"I wear both my Q-Ring and Apple Watch daily. The ring excels at sleep tracking while my watch handles workouts perfectly. They sync seamlessly through Apple Health - no conflicts at all. Best combo for complete health tracking!"

bsantschi

January 03, 2026

5/5

"Got the R-RING as a gift and couldn't be happier! Using it throughout my pregnancy and recovery. The sleep insights are incredible, and the menstrual cycle tracking is spot-on. Worth every penny."

SpiritoftheRadio2112

January 22, 2026

5/5

"Had my R-RING since October - mainly use it for sleep and cycle tracking. Battery lasts almost a week! Pro tip: I got a ring protector for work and clear sizers for a more secure fit. Game changer."

DeafGirl93

December 17, 2025

"Managing multiple devices was confusing at first, but everything syncs to Apple Health beautifully. Would love more guidance on optimizing the data flow between apps."

csena8863

December 24, 2025

"The app was overwhelming initially, but once I understood the layout, it became my daily health companion. Sleep scores motivate me to maintain better habits!"

sabrinamata7132

January 15, 2026

"As a rower, I can't wear it during training - it interferes with my grip on the oar. But for sleep tracking and off water recovery monitoring, it's phenomenal. Runners and cyclists would love this more than hand-intensive athletes."

JackBXD

January 19, 2026

"Just got mine and I'm obsessed! The real-time stress monitoring helps me know when to take breaks during work. Size exchange was super easy too."

Pinkbubblez77

January 08, 2026

"Switched from only nighttime wear to 24/7 tracking. The activity data is so much richer now! Apple Watch and Oura work well together, though not 100% seamless. Sleep tracking alone makes it worth it."

pedrosikes

January 02, 2026

"Bought it to supplement my Apple Watch for sleep quality tracking. Finally understanding why I wake up tired! The insights are helping me optimize my sleep schedule."

DaleYuzuki

November 12, 2025

"Comprehensive and accurate. Love how lightweight it is - forget I'm even wearing it most days. The readiness score helps me plan my workout intensity and recovery days."

michaelpepe7814

December 17, 2025

"Went with brushed silver for durability. After 6 months, still looks brand new! No scratches or wear. Highly recommend this finish if you're active."

user-bf6go9nf6g

November 25, 2025

"Switched from Whoop after 3 tries. R-RING just makes more sense - better data visualization and no need to wear a strap. Pairs perfectly with my Garmin for workouts."

HannahandAdamTurgoose

October 15, 2025

"Samsung ring died after 6 months. R-RING is built to last! Connection to iPhone is smooth, and the app is way more intuitive. Hope this one goes the distance."

ptshotsun

February 19, 2026

"Wear my wedding band on left hand, R-RING on right index finger. Took a few days to get used to, but now feels natural. No issues with accuracy on non-dominant hand!"

timestamps8576

November 04, 2025

"Setup was confusing for 5 minutes, then totally clicked. The automatic sleep detection is brilliant - no need to tell it when you're going to bed!"

Crime-On-A-Dime

January 31, 2026

How R-RING Compares

Width

Weight

Battery

single charge

Charging case story

Charge time

Water resistance

Core metrics

Guidance feel

Ecosystem friction

Subscription

Lumina Q-Ring

$280.0

6.5 mm

2.9 g

5–7 days

Optional travel case (recommend for U.S. bundle)

~1–2 h full

10 ATM

HR/HRV, SpO₂, skin temp, sleep, stress, activity

No-paywall daily summary (keep it simple + tips)

iOS / Android, Apple Health (per spec), no lock-in

Samsung Galaxy Ring

$399.99

7.0 mm

3.0 g

Up to 7 days

Included; total up to ~14 days

~80 min

10 ATM + IP68

HR/HRV, temp, sleep, snore detect, auto walk/run

Galaxy AI “Energy Score”, gestures

Requires Galaxy phone + account

Oura Ring 4 (Titanium)

$349.0

7.9 mm

3.3–5.2 g

5–8 days

—

20–80 min

100 m / 328 ft

50+ metrics; sleep/recovery ecosystem

Deepest insights, but paywalled

iOS/Android, membership required for full

Yes (to unlock full features)

Find Your Perfect Fit

Pro tip: If between sizes, choose the smaller one for better sensor contact and accuracy.

Step 1

Order with Free Sizing Kit option

Step 2

Wear sample rings for 24+ hours on your chosen finger

Step 3

Confirm your size via email

Step 4

We ship your Q-Ring within 5-7 days

Lumina Q-Ring
Magnetic charging cradle
Warranty card
USB-C cable
User manual

PHYSICAL DESIGN

Material

Case

Available Sizes

#6 (16.5mm), #7 (17.4mm), #8 (18.2mm), #9 (19.0mm), #10 (19.9mm), #11 (20.7mm), #12 (21.5mm), #13 (22.3mm)

Thickness

3mm

Weight

Approximately 2.9g

Color Options

Silver, Gold, Black

Water Resistance

10ATM (100 meters)

CHIPSET & CONNECTIVITY

Main Chipset

RM1235 customized ultra-low power Bluetooth

Bluetooth Version

5.0 Low Energy

Memory (SRAM)

56KB + 16KB cache

ROM

128KB

Flash Storage

4Mbit

OTA Support

Yes

SEE ALL TECHNICAL SPECIFICATIONS

FAQs

Got questions?
We've got Lumina
answers

Do I really not have to pay a monthly fee?

Correct. Everything is included with your one-time $280 purchase. No hidden costs, no surprise charges.

How accurate is the sleep tracking?

R-RING's sleep stage detection is validated at 89% accuracy compared to lab-grade sleep studies. After a few nights, it learns your patterns and becomes even more precise.

Can I wear it in the shower?

Yes. R-RING is waterproof to 100 meters. Wear it swimming, showering, or washing dishes.

Which finger should I wear it on?

Most people choose their index or middle finger on their non-dominant hand. The sizing kit helps you figure out what works best.

What if I pick the wrong size?

We'll send you the correct size for free within the first 30 days. Just let us know.

How long does the battery last?

5-7 days depending on usage. Charging takes about an hour.

Does it work with my phone?

If your phone runs iOS 10 or Android 5.0 (or newer), yes. That covers almost all phones from the past 6 years.

Can I track my menstrual cycle?

Yes. R-RING uses temperature data to predict your period and ovulation more accurately than calendar-based apps.

What does R-RING track?

R-RING uses high-frequency monitoring to capture health data multiple times per second, giving you real-time stress detection and precise recovery tracking designed for optimal sleep restoration.

Sleep — total duration, efficiency, light/deep/REM stages, wake events, restlessness, and sleep debt accumulation.
Heart Health — resting heart rate, heart rate variability (HRV), continuous SpO₂ (blood oxygen), and stress rhythm patterns.
Activity — steps, distance, active minutes, calorie expenditure, and sedentary time alerts.
Recovery — daily readiness score (0-100), post-workout HRV suppression, overnight recovery quality, and sleep-based recovery assessment.
Women's Health (with Women Kit) — menstrual cycle prediction (±1 day), ovulation window estimation, basal body temperature trends, and symptom correlation for mood, energy, and cramps.

At just 2.9 grams and 6.5mm wide—lighter than a sheet of paper and the slimmest on the market—you'll forget you're wearing it. R-RING is waterproof, lasts up to a week on a single charge with quick magnetic charging, and works seamlessly with iOS and Android via Bluetooth.

Your data stays yours. All insights included with no subscription fees, ever.

What's the return policy?

30 days, full refund, no questions asked. Just return it in the original packaging.

Something else? Get in touch

Real unboxings, real reactions

“Finally ditched my Apple Watch”

@MindfulPleasure

Mar 12, 2025

“Finally ditched my Apple Watch”2

@MindfulPleasure

Mar 12, 2025

“Finally ditched my Apple Watch”3

@MindfulPleasure

Mar 12, 2025

“Finally ditched my Apple Watch”4

@MindfulPleasure

Mar 12, 2025

“Finally ditched my Apple Watch”5

@MindfulPleasure

Mar 12, 2025

Cart

R-Ring Sleep & Health Tracker

Sizes available

R-Ring Sleep & Health Tracker

Sizes available

Engineered for Recovery.

What Q-Ring Tracks While You Sleep

Sleep Stages

Sleep Quality Score

What Disrupted Your Sleep

Stress Level

Body Temperature

Heart Rate Overnight

Intelligence That Grows With You

Daily Readiness Score

Sleep Stage Breakdown

Stress Rhythm Tracking

Women's Cycle Prediction

Lighter Than Air

Titanium Tough

Up to 7 Days Battery

10ATM Water Resistant

No Phone Required. No Subscription Ever.

Works With Any Phone

Every Feature Unlocked

Your Data Stays Yours

Don't Just Take Our Word for It

Lumina Q-Ring

Samsung Galaxy Ring

Oura Ring 4 (Titanium)

Find Your Perfect Fit

Step 1

Step 2

Step 3

Step 4

Add-on

R-Ring Sleep & Health Tracker

Specifications

Got questions? We've got Lumina answers

Do I really not have to pay a monthly fee?

How accurate is the sleep tracking?

Can I wear it in the shower?

Which finger should I wear it on?

What if I pick the wrong size?

How long does the battery last?

Does it work with my phone?

Can I track my menstrual cycle?

What does R-RING track?

What's the return policy?

Real unboxings, real reactions

© 2026 - Lumina

No Phone Required.
No Subscription Ever.

Got questions?
We've got Lumina
answers