Understand your recovery while you sleep
Your body does its best repair work at night. The Smart Ring tracks every stage — so you know exactly how well you recovered before the day begins.
- Continuous HRV and resting heart rate monitoring
- Automatic sleep stage detection — light, deep, REM
- Morning recovery score based on your night
Wear
Put it on like any other ring. 2mm slim — you'll forget it's there.
Track
Sleep, HRV, SpO2, temperature, and activity — measured continuously.
Improve
See your recovery score each morning. Make decisions backed by your own data.
Your daily effort, measured accurately
Steps, active calories, and movement patterns tracked from your finger — no screen required, no distraction while you train.
- Automatic activity detection, no manual logging
- Activity score based on intensity and duration
- Compare workouts against your recovery baseline
Technical Specifications
Battery life varies by usage patterns and environmental conditions.
- Battery Life
- Up to 7 days
- Water Resistance
- IPX8 (100m)
- Sensors
- PPG, NTC, Accelerometer
- Ring Sizes
- 6, 7, 8, 9, 10, 11, 12, 13
- Ring Width
- 8mm
- Ring Thickness
- 2.3mm
- Charging
- Wireless charging dock (included)
- Compatibility
- iOS 14+ / Android 10+
Frequently asked
Everything you need to know before you buy.
What ring size should I order?
We recommend using our size guide to measure your finger at the end of the day when fingers are slightly larger. If you're between two sizes, order the larger size for a comfortable fit.
Is the Smart Ring waterproof?
Yes. The Smart Ring is rated IPX8 — safe for swimming, showering, and water exposure up to 100m depth. You never need to take it off.
How long does the battery last?
Up to 7 days on a single charge, depending on usage and tracked activities. A full charge takes approximately 60–80 minutes using the included wireless charging dock.
Does it work with iPhone and Android?
Yes. The companion app is available for iOS 14+ and Android 10+. Data syncs automatically over Bluetooth whenever your phone is nearby.
What health metrics does it track?
The Smart Ring tracks sleep stages (light, deep, REM), HRV, resting heart rate, blood oxygen (SpO2), skin temperature, steps, and active calories. Metrics are combined into a daily Recovery Score each morning.