Three Luna smart rings in rose gold, silver and black, resting on pale stone blocks among white blossom.

Your mornings, one calm number at a time

A lightweight smart ring that quietly tracks your sleep, heart rate, and recovery through the night — then turns it into one clear number to start your day.

  • IP68 waterproof — wear it in the shower, the pool, everywhere.
  • All-night sleep & recovery, distilled into one readiness score each morning.
  • 7-day battery on a single charge.
Shop now
Diamond Side Strip Luna Smart Ring IP68 Waterproof Sleep and Fitness Tracker Rings - V04

Diamond Side Strip Luna Smart Ring IP68 Waterproof Sleep and Fitness Tracker Rings - V04

Gold / 7
$69.00
$69.00 $99.00
Skip to product information
Diamond Side Strip Luna Smart Ring IP68 Waterproof Sleep and Fitness Tracker Rings - V04
Diamond Side Strip Luna Smart Ring IP68 Waterproof Sleep and Fitness Tracker Rings - V04

LUNA RING

Diamond Side Strip Luna Smart Ring IP68 Waterproof Sleep and Fitness Tracker Rings - V04

No subcription · Free shipping
$69.00
$69.00 $99.00
30% OFF Limited time offer
ColorGold
Size

Measure your finger with a strip of paper or a piece of string.

Step 1. Wrap the strip snugly around the base of the finger you will wear the ring on, and mark where the ends overlap.

Step 2. Lay the strip flat, measure its length with a ruler, then match your number to the chart below.
SizeFinger circumference
657 – 60 mm
760 – 63 mm
863 – 65 mm
965 – 68 mm
1068 – 71 mm
1171 – 74 mm
1274 – 76 mm
1376 – 79 mm

If your measurement falls exactly on the boundary between two sizes, choose the larger size.

These numbers are your finger's actual circumference, so they can differ slightly from official ring charts, which are based on a rigid metal band.

If the size still is not right, your first exchange is free.
Illustrated ring size guide: wrap a thin strip around your finger, measure its length with a ruler, then match the millimetres to a ring size.

Get one for someone you love

SAVE $20
Buy any 2 Luna rings and $20 comes off automatically at checkout.
Add a second ring
Discount applies automatically — no code needed.

Complete your Luna set

Total

A day with Luna

From first light to deep sleep

Six things Luna keeps track of while you get on with your day — and one quiet place to see them all.

  1. A hand wearing the Luna ring typing on a laptop at a sunlit office desk.
    Heart Rate
    0 bpm
    0
    Average
    0
    Minimum
    0
    Maximum

    Heart Rate Monitoring

    Continuous heart rate monitoring, day and night, for deeper wellness insights whenever you need them.

  2. A man in a navy jacket resting his chin on his hands, wearing the Luna ring, looking out over a city.
    Stress
    0 Normal
    Relax0–290%
    Normal30–590%
    Medium60–790%
    High80–1000%

    Stress & Recovery

    Measure your heart rate variability (HRV) to monitor stress levels and better manage everyday stress.

  3. A cyclist's hand on the drop handlebar of a road bike, wearing the Luna ring, trees blurring past.
    Activity
    STEPS
    0
    / 8000
    DISTANCE
    0 mi
    / 4.0 mi
    CALORIES
    0
    / 500 kcal

    Multiple Sports Modes

    Track your workouts across a wide range of sports modes — running, cycling, walking, swimming and more — for well-rounded activity insights.

  4. A bare hand gripping a ski pole in deep snow, wearing the Luna ring, a mountain slope behind.
    Blood Oxygen
    0 % Range 96–99%

    Blood Oxygen (SpO2) Trends

    Check your estimated blood oxygen levels throughout the day to better understand your daily wellness patterns.

  5. A woman lying on a bed in warm lamplight, hands folded in front of her, wearing the Luna ring.
    Menstrual
    ‹ October 2025 ›
    Menstrual period Ovulation
    For logging & reminders · available in female mode

    Menstrual Cycle Tracking

    Log your menstrual cycle and get simple reminders. (Available in female mode.)

  6. A woman asleep on her side in soft morning light, one hand resting on the pillow wearing the Luna ring.
    Sleep Oct 12
    0
    General
    02:5507:35
    4h 40m

    Advanced Sleep Tracking

    Understand your sleep cycles, including deep, light, and REM stages, for smarter rest and recovery.

Built to be worn — and forgotten.

Four things that let you put it on and stop thinking about it.

The Luna smart ring seen at an angle, showing the sensor board inside the band and the diamond-set outer edge.

Charging… 0 / 4

7-Day Battery

A full week on a single charge. Track day and night without thinking about the charger.

IP68 Water-Resistant

Shower, wash, swim — wear it everywhere and never take it off.

Jewelry-Grade Titanium

A premium titanium finish that looks like a ring, not a gadget — light enough to forget you're wearing it.

Works With Your Apps

Compatible with popular smart-ring apps on iOS and Android — QRing, LuckRing, and more.

Fast Charging From empty to full in about 30 minutes.

The honest comparison

All the tracking. None of the markup.

You're paying for the ring — not a brand name, and never a monthly fee to see your own data.

Feature Luna Ring The other-brands ring
Price $69 $299–$549
App subscription $0 — no monthly fee ~$70 / year
Sleep stages & score
Heart rate, HRV & stress
Blood oxygen (SpO2)
Cycle tracking
Battery life 7 days 4–7 days
Water-resistant (shower & swim)
Risk-free trial 30 nights Varies

Comparison based on publicly listed prices and features of leading smart rings, 2026.

Your Luna set

What's in the box

Two things come with every ring. Two more are yours to add.

  • Luna RingThe ring itself, in the size and finish you pick above.Included
  • USB ChargerThe charging base and its USB cable.Included
  • Fashion Ring Bag MiniA mini pouch with a gold clasp, clips to your bag.Optional
  • Premium Charging CaseA clear case with the charger built in.Optional

Question

Good to know.

How accurate is Luna really?

Luna reads from the palm-side arteries, where the signal is strongest. It's built to give you reliable day-to-day trends for sleep, heart rate, and activity — think of it as a personal wellness tracker, not a medical device.

Is there a subscription?

No. Every core insight — sleep, readiness, recovery, and trends — is included for life when you buy the ring.

How do I find my size?

Please read our size chart guide, then choose the size that best fits you. If you accidentally choose the wrong size, don't worry, we have a free exchange policy for the first time if you choose the wrong size.

What's your return policy?

Try Luna for 30 nights. If it's not for you, send it back for a full refund — no questions, free return shipping included.

Shipping Information

Processing time: 1–2 business days.
Shipping time: 5–7 business days.
We offer a stress-free 30-day return policy — if you're not completely happy, you can return your ring within 30 days.
For full shipping details, see our shipping policy.

SHIPPING TIMES

How do I connect the ring to an app?

Luna Ring works with popular smart-ring apps on iOS and Android — like QRing and LuckRing. Setup takes about a minute:

1. On your phone, turn on Bluetooth.
2. Download QRing (or LuckRing) and open its device-pairing settings.
3. Place your fully-charged ring next to your phone to pair.

Once connected, your sleep, heart rate, and activity sync automatically each day.

Sleep better. Wake up knowing.

Try Luna risk-free for 30 nights. If it's not for you, send it back.

30-night trial · Free shipping · Easy returns

Explore other Luna rings

  • 5 stars: 16 (84%)
  • 4 stars: 3 (16%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
A
Adelina Quitzon

Very good! It works excellently, I have compared it with my Apple Watch and it gives me the same results. It includes temperature measurement.

Adelina Quitzon review photo Adelina Quitzon review photo
J
Jayme Breitenberg

The ring is very beautiful and fits perfectly.

Jayme Breitenberg review photo
O
Ollie White

Excellent product, accurate measurements, worth every penny.

Ollie White review photo
B
Benedict Okuneva

Love this ring. I compared the ring to a garmin watch. The ring is more accurate. Depending on the settings, i charged it once in three days; charges very quickly. I'm very happy with the ring. Going to buy one for my husband

Benedict Okuneva review photo
A
Antonina Corkery

Great product so far. Comfortable to wear and looks really great. Size feels it fits small, 7 felt like a 6

Antonina Corkery review photo
L
Linette Hagenes

Excellent smart ring. I immediately took the maximum size. Everything fit perfectly. Waterproofing confirmed completely. A month of river bathing. Measures heart rate, temperature, and blood pressure (indirectly, in its own units 0-100, not mmHg). ), blood oxygenation (in my opinion, slightly overestimates), pedometer, also pulse variability (I don't know what that is), sleep. It works autonomously, then uploads the data to the phone. With all connected monitoring devices, the battery lasts approximately 3 days. The app is a bit poorly localized into Russian, but everything is clear. Among the disadvantages, compared to a fitness tracker, activities can only be activated from the phone. Everything else is just a plus.

T
Trinity Schroeder

Device (ring) is nice, comfortable and works very good!

R
Rufus Collins

The delivery service provided by the postal service is disastrous, if not bad, bad, very bad.

I always have to go to the pickup location; the delivery person doesn't come to drop off the package. It's a waste of money with this company.

R
Rocio Baumbach

beautiful craftsmanship, my wife liked it a lot

E
Elroy Hamill

Diamond Side Strip Luna Smart Ring IP68 Waterproof Sleep and Fitness Tracker Rings - V04

B
Billy Dietrich

Beautiful! The app works well, but you need to restart the phone after the initial setup after installation. It syncs without any problems. I hope it will work for a long time! The finger size measured with a strip of paper before purchase almost perfectly matches, although it's slightly larger than the measurement taken with the tape included with the ring. I bought size #9; if it were #8, it would fit better, but this one is also OK.

C
Cristopher Gerhold

The ring is beautiful, it was a bit too big, but aside from that detail, it's wonderful.

D
Daria Pfannerstill

A good ring, the size matches, but there is a slight error in the measurements. The translation in the app is poor and you can't select another option in the app.

A
Alix Feest

Fast shipping and delivery. The ring works, I recommend buying it!

E
Ezekiel Windler

Looking forward to long battery life better than old ring , this one does temp too

J
Jeannette Gleichner

This was good just on the smaller side and not sure i like the shine.

C
Caleb Farrell

Very good, works great.

C
Carita Ledner

I have one and i love it. Then i bought one for my husband and he likes it too. App works very well, easy to use. Very recommended it.

O
Otha Franecki

Matches the seller's description. Good quality. Delivered in 11 days!!. Very satisfied.