Heart rate
Continuous, all-day readings with 7-day trends and resting-rate analysis.
Launching 2026
The Ring.
Clinical-grade sensing folded into 2.5 grams of jewelry. Everything you want to know about your body, and nothing you have to think about.
What it reads
Health you can measure.
Blood oxygen
On-demand SpO₂ tests plus saturation trends over your last seven readings.
Sleep, in full
Sleep score, stages, proportions, and average sleep heart rate. Wake up knowing exactly how the night went.
HRV & stress
Heart-rate variability and stress trends that show how your day is landing, plus average HRV through the night.
24modes
Activity
19 everyday workouts plus 5 GPS sports, with steps, distance and calories tracked automatically.
Made to be worn, not tolerated.
A polished stainless-steel shell over a smooth inner resin finish. No sharp edges, no rubbery band, no blinking light. Just 2.6 millimeters of ring that happens to be brilliant.
Sizes 7 to 12
2.5 g
5ATM water resistant
Magnetic charging
One calm app for all of it.
Tests, trends, and history in a place you actually want to open. Syncs with Apple Health and WeChat, and updates itself over the air.
The details.
Weight
2.5 g
Thickness of 2.6 mm. Among the lightest smart rings you can wear.
Water resistance
5ATM
Rated for showers, swimming and rain. Keep it on.
Battery life
Up to 5 days
Roughly 3 to 5 days of everyday use per charge.
Charging
~90 min
Full charge on the magnetic dock in about an hour and a half.
Material
Stainless steel
Polished steel shell with a smooth resin inner surface.
Sizes
7 to 12
Inner diameter 17.3 mm to 21.5 mm. A sizing kit ships first.
Connectivity
Bluetooth LE
GPS through your phone. Over-the-air firmware updates.
Works with
iOS & Android
iOS 10 and later, Android 5.0 and later. Syncs to Apple Health.
Finish
Classic Black
Launch finish, with more colorways in the works.
Be the first in the spotlight.
Join the waitlist for early access, launch pricing, and a first look at every finish.
No spam. Just one note when it is your turn to shine.
You are on the list.
We will be in touch before launch.
We will be in touch before launch.