Three LEDs, Three SecondsKnow your Energy
USAY turns complex body data into simple visual feedback.
Not only tracking,
but knowing yourself.
Most wearables collect data. Usay helps you understand it instantly. No no need to open the app. No guessing.
Primed for peak performance.
Maintain steady focus.
Time to slow down.
WELLNESS TRACKING
All Your Daily Wellness Signals, in One Ring.
Heart Rate
Track your heart around the clock.
HRV
Understand your body's recovery patterns.
Blood Oxygen (SpO2)
View your blood oxygen trends over time.
Sleep Analysis
Track light, deep, and REM sleep.
Stress Tracking
Know when pressure starts building.
Activity Tracking
Steps, workouts, and movement.
Body Energy
Understand your daily readiness and recovery.
Simple on Your Finger
Deep in the App
Your daily wellness insights, all in one simple app.
Meet UU, Your AI Body
Companion.
USAY turns complex body data into simple visual feedback.
07:30 AM
Wake-Up
Start your day with sleep insights and a quick energy light check.
06:00 PM
Move & Perform
Compare
USAY Ring vs Traditional Wearables
Every curve, every gram, every surface has been obsessed over. USAY is jewelry that happens to be a health computer.
SIZING GUIDE
How to Choose Your Ring Size
Every USAY order includes a free sizing kit with 7 trial rings. We recommend measuring before ordering to ensure the perfect fit.
1. Order Your Ring
2. Receive Your Sizing Kit
3. Try Different Sizes
4. Confirm Your Fit
BATTERRY & CHARGING
Power That Keeps Up
With You.
Long-lasting battery life for daily health tracking.
CRAFTMANSHIP
Designed in Every Detail.
Designed for Everyday Wear. Engineered for Everyday Insight.
CRAFTMANSHIP
Designed in Every Detail.
Designed for Everyday Wear. Engineered for Everyday Insight.
Design
What's In The Box
Ultrahuman Ring PRO
Ring PRO Charger
Type-C to C Cable (1 mtr)
UNDER THE HOOD
Specifications
Material
Thickness & Weight
Battery Life
Offline Data Storage Duration
Waterproof
Sensor
Compatibility
Connectivity
Integrations
Loved By Early Users
Small moments, real stories, and everyday love from
our early community.
SUPPORT
FAQ
How accurate is the USAY Ring's health tracking?
USAY's triple-LED PPG sensors achieve ±1% accuracy for SpO2 and ±2 bpm for resting heart rate — validated against clinical-grade pulse oximeters and Holter monitors in third-party studies. Temperature accuracy is ±0.1°C for skin temperature trending.