step 1
Wear The Ring
Use the official free sizing kit to determine the correct size, ensuring the ring fits snugly without feeling tight. We recommend wearing it on your index finger, as this provides optimal sensor contact and ensures more stable tracking data.
Place the ring on your finger with the indicator light facing upward. The ergonomic inner curve is designed to ensure comfort, so the ring will not squeeze your finger even during continuous day and night wear.
Self-check for proper fit: if the ring does not slip off when you shake your hand, and there are no noticeable indentations after removal, the fit is correct.
step 2
Track Your Body
Once properly worn, Usay Ring 1 automatically starts tracking without any manual activation. Built-in high-precision sensors run 24/7 to capture key biometrics, including resting heart rate, heart rate variability (HRV), blood oxygen (SpO₂), vascular vitality, sleep stages, and daily activity levels.
No frequent charging is required: a full charge provides 3–5 days of continuous tracking. The charging case stores additional power, offering over 50 days of backup charging.
The IP68 waterproof design allows tracking during handwashing, showering, and swimming, so you never need to remove it in daily life.
step 3
Check The Lights
The ring features three LED status lights, allowing you to instantly view real-time energy and stress levels without opening the app.
How to view indicators: the internal sensor and light module supports 180° rotation. Simply twist your wrist 180° to bring the light panel upward, and the lights will automatically activate to show your current physical state.
step 4
Explore Insights in the App
Connect the Usay Ring to the official Usay App via Bluetooth to automatically sync 24-hour tracking data. Full historical trends and detailed daily health reports are generated instantly.
Use the built-in free AI Health Assistant to ask questions in text or voice, such as “How was my sleep last night?” or “Why is my stress level high recently?”, and receive simple, easy-to-understand insights without complex charts.
View long-term vascular vitality trends, full 4-stage sleep analysis (Awake / Light Sleep / Deep Sleep / REM), weekly heart rate trends, and personalized wellness suggestions to improve your lifestyle.
FAQ
Why does Usay Ring 1 have LED lights?
Most wearable devices only allow you to review historical data from the previous day. Usay Ring 1 is designed for real-time status tracking. The built-in smart LED lights provide instant feedback without opening the mobile app:
- Stress alert: When physiological stress reaches a moderate to high level, the ring flashes for 3 seconds as a reminder.
- Energy Level Check: Real-time display of your body energy, helping you decide whether to continue exercising or take a rest.
How do the LEDs work?
Usay Ring 1 is equipped with three built-in LED lights that provide real-time body feedback without opening the app. Simply rotate your wrist 180 degrees to bring the light panel into view.
- All 3 lights on (steady): High energy level, stable stress, and good physical condition
- 2 lights on (steady): Moderate fatigue and medium physiological stress
- 1 light on (steady): Low energy and increasing stress
- When physiological stress reaches the warning threshold, all three lights will flash continuously for 3 seconds as a silent visual reminder to rest and recover.
What is body energy?
Body Energy reflects your real-time physical stamina and fatigue level. It is calculated based on heart rate variability (HRV), blood oxygen, vascular activity, and daily activity data. The LED lights directly display your energy level to help you decide whether to continue exercising or take a break.
What is the AI health assistant? Is it free to use?
It is a built-in text and voice assistant. You can ask everyday questions in natural language, such as “How did I sleep last night?” or “Why am I under so much stress?”, without needing to read complex data charts.
The standard version is free with every ring, offering approximately 10 text interactions per day, which meets most users’ daily needs.
Do I need a paid subscription to view health data?
No subscription is required. All core health metrics, including sleep, stress, heart rate, and vascular vitality, are available for free during our extended free access period.
Which devices are compatible with Usay Ring 1?
Usay Ring 1 works with smartphones running iOS 10 or later, Android 15 or later, and Bluetooth 5.0 or above.
How do I confirm my correct ring size?
Do not rely on your regular jewelry ring size. Select the free sizing kit at checkout, and we will send you a measuring tool first. Wear the sizing ring for at least 24 hours, including during sleep, then scan the QR code inside the package to submit your size. We will then ship your official smart ring.
Can I use sizing tools from other brands?
No. Each brand’s sizing tools differ in sensor placement and inner structure. Only the official Usay sizing kit guarantees accurate measurement results.
What ring sizes are available?
Usay Ring 1 is available in sizes #6 to #14. We strongly recommend using our free sizing kit before purchasing to ensure a perfect fit.
Which finger should I wear the ring on?
We strongly recommend wearing it on your index finger for the most accurate data, especially for vascular vitality and sleep tracking. The index finger has stronger arterial blood flow, providing better sensor signal quality.
What if the ring gets stuck on my finger?
Raise your hand and apply ice to reduce swelling. Then use soap, lotion, or oil to lubricate your finger and gently twist the ring off. You may also use the dental floss method to slide it off. Do not force the ring off. Seek medical help immediately if your finger becomes discolored, numb, or painful.
Still have questions?
Our support team is available 7 days a week via live chat and email.