Skip to product information
1 of 8
★★★★★
4.8/5(3,100+ reviews)

Medical-Grade Smart Ring — ECG, SpO2 & Sleep Tracker

Medical-Grade Smart Ring — ECG, SpO2 & Sleep Tracker

Hospital-accuracy ECG, continuous SpO2 & heart rate, advanced sleep staging — in a titanium ring that weighs under 8 grams.

Regular price $279.00 USD
Regular price $389.99 USD Sale price $279.00 USD
Sale Sold out
Shipping calculated at checkout.
Medical-Grade ECG7-Day Battery5ATM Waterproof
Quantity
Only 31 left — most popular size sells out weekly
Free US Shipping
30-Day Returns
1-Year Warranty
View full details

TRUSTED BY HEALTH PROFESSIONALS

HealthlineTechCrunchCNETMen's HealthVerywell
THE HIDDEN RISK

Your Watch Tracks Steps. But Do You Know Your Heart Rhythm?

6.1 million Americans have undiagnosed atrial fibrillation. Smartwatches miss it because they don't have medical-grade ECG electrodes. A ring on your finger does.

6.1M
Undiagnosed AFib
<8g
On your finger
24/7
Continuous data

Everything a Smartwatch Does. Nothing You Have to Charge Every Night.

Medical sensors in aerospace-grade titanium. 7 days per charge.

❤️

Hospital-Grade ECG

High-precision electrodes detect irregular heart rhythms on demand, right from your ring.

💧

24/7 SpO2 + Heart Rate

Continuous blood oxygen and pulse tracking during sleep, workouts, and daily life.

🛌

Advanced Sleep Staging

Automatically scores light, deep, and REM. Calculates a daily recovery readiness index.

💎

Aerospace Titanium

5ATM waterproof, hypoallergenic ceramic inner, 7-day battery, under 8 grams.

How It Works

No subscription. No monthly fees. Just put it on.

1

Size Your Finger

Use the included sizing kit to find your perfect fit. Available in sizes 6-13.

2

Wear It

Slip the ring on and pair via Bluetooth. The app guides you through a 2-minute setup.

3

Know Your Health

Check ECG on demand. Review sleep scores. Get alerts for abnormal readings. Share with your doctor.

Know your heart rhythm. Starting today.

Add to Cart — $199

What Our Customers Say

★★★★★
4.8/5(3,100+ reviews)
★★★★★

“My cardiologist confirmed the ECG reading caught a PAC episode my Apple Watch missed. This ring may have saved my life.”

T

Thomas W.

Boston, MA • Verified Buyer

★★★★★

“I sleep with it, shower with it, deadlift with it. 7 days between charges. The sleep data alone is worth the price.”

A

Amanda R.

San Diego, CA • Verified Buyer

★★★★★

“I switched from Oura because this has ECG. No subscription fee was the cherry on top.”

K

Kevin L.

Austin, TX • Verified Buyer

Smart Ring vs. The Competition

Medical-grade accuracy without the bulk, the subscription, or the nightly charge.

Our Smart RingApple WatchOura Ring
ECG✓ Medical-grade, on-demandSingle-lead ECGNo ECG
Form factor✓ Ring, 8gWatch, 51gRing, 7g
Battery✓ 7 days18 hours5-7 days
Subscription✓ None, everNone$6/mo required
Price✓ One-time $199$399+$299 + $72/yr

Technical Specifications

MaterialAerospace-grade titanium + ceramic inner
SensorsECG electrodes, PPG (HR+SpO2), temperature, accelerometer
Battery7 days continuous | 90-min magnetic charge
ConnectivityBluetooth 5.3
Water resistance5ATM (50m)
CompatibilityiOS + Android, Apple Health, Google Fit
WeightUnder 8 grams

Our Promise to You

If the Smart Ring doesn't become the most important health device you own within 30 days, return it for a full refund.

📅

30-Day
Money Back

🛳

Free US
Shipping

🔒

Secure
Checkout

🔧

1-Year
Warranty

Frequently Asked Questions

How do I find my ring size?
Every order includes a free sizing kit with plastic sizers for all available sizes (6-13). We recommend wearing the sizer for 24 hours before ordering.
Is the ECG as accurate as a clinical device?
The ring uses medical-grade electrodes comparable to single-lead clinical ECG. It's designed for screening irregular rhythms like AFib, not 12-lead diagnostic workups.
Can I shower and swim with it?
Yes. 5ATM rated — safe for swimming up to 50 meters, showering, and all water activities.
Is there a monthly subscription?
No. All features are included with your purchase. No subscription, no premium tier, no hidden fees. Ever.
What's your return policy?
30-day no-questions-asked money-back guarantee. Free return shipping included.

Your Health. Your Finger. Zero Compromises.

Join 3,100+ Americans who ditched bulky wearables for a smarter ring.

$278$199SAVE $79
Add to Cart

Free shipping • 30-day returns • 1-year warranty