Introduction
The COLMI R03 Smart Ring with Charging Case is a revolutionary wearable technology designed for seamless health monitoring. It allows you to effortlessly track your heart rate, blood oxygen, and stress levels, ensuring you're always informed about your body's status. Crafted with a titanium steel shell and advanced low-temperature potting technology, the ring boasts 5ATM & IP68 water resistance, making it durable and suitable for everyday wear. It's not just lightweight but also incredibly resistant to wear and tear. The R03 Smart Ring supports 20 different exercise modes, monitoring your heart rate data in real-time during workouts. Embrace the future of smart wearables with the COLMI R03 Smart Ring – a perfect blend of innovation, style, and health consciousness.
Video: Overview of the COLMI R03 Smart Ring features and design.
Getting Started & Setup
1. Unboxing and Initial Charge
Upon receiving your COLMI R03 Smart Ring, ensure all components are present:
- COLMI R03 Smart Ring
- Charging Case
- Charging Cable
To begin, charge the COLMI Ring using the provided charging cable and case. The heart rate light on the ring will illuminate, indicating a successful startup and charging process.

Image: COLMI R03 Smart Ring with its charging case.

Image: The smart ring being charged in its compact case.
2. Wearing the Ring
For optimal performance and accuracy, it is recommended to wear the COLMI Ring on your index finger. The middle and ring fingers are also suitable if preferred. Avoid wearing the ring on fingers that are significantly narrower than the knuckles at their base, as this may affect sensor contact and data accuracy.

Image: A person wearing the COLMI R03 Smart Ring.
3. App Connection (Qring App)
The Qring app is essential for connecting your smart ring and viewing your health data. Ensure Bluetooth is enabled on your smartphone. The app will automatically connect to the ring when launched. Even when not connected to the phone, the ring can independently perform body monitoring and record blood oxygen and heart rate status. The data will be updated within the app once connected.

Image: Screenshot of the Qring app displaying various health metrics.
Operating Instructions
The COLMI R03 Smart Ring continuously monitors your health and activity. All data is accessible through the Qring app on your smartphone.
1. Heart Rate Monitoring
The ring tracks your heart rate 24/7. You can view real-time heart rate data and historical trends in the Qring app. This helps you understand your body's state during exercise and relaxation, enabling proactive checks for irregularities or abnormal heartbeats.

Image: Qring app interface displaying detailed heart rate data and trends.
Professional advice: Check your heart rate data after exercise to prevent excessive heart rate that can overload the heart and reduce the risk of cardiovascular diseases.
2. Blood Oxygen (SpO2) Monitoring
Blood oxygen is a vital indicator of overall health. The smart ring can record your blood oxygen data accurately. You can check your SpO2 levels anytime through the app.

Image: Qring app interface displaying blood oxygen saturation levels.
Note: This app is not a medical device. Data obtained during the use of this app is for reference only, and should not be used for clinical diagnosis, medical research, diagnostic, or treatment purposes.
3. Sleep Monitoring
The ring automatically tracks your sleep quality when you fall asleep and generates reports to help you develop good sleep habits. It allows you to understand the proportion of REM, light sleep, and deep sleep throughout your sleep period, contributing to a good health status.

Image: Qring app interface displaying sleep analysis, including duration of deep, light, and awake states.
4. Daily Activity Tracking
The Qring app generates activity statistics, including daily energy consumption, average daily step count, and average daily standing count. It provides daily, weekly, and monthly data visualization for your steps, calories, and distance.

Image: Qring app interface displaying daily activity metrics like steps, distance, and calories.
The ring supports multiple exercise modes, accurately recording pedometer data, calorie consumption, and distance during your workouts.

Image: Sport record data from the app, showing mileage, calorie consumption, and heart rate during exercise.
5. Perceived Control & Camera Linkage
The smart ring offers perceived control for convenient linkage, such as gesture perception camera control. This allows you to remotely control your phone's camera with simple gestures.

Image: A user demonstrating gesture control for a smartphone camera using the smart ring.
Maintenance
1. Waterproofing
The COLMI R03 Smart Ring features 5ATM & IP68 waterproof technology, allowing it to withstand daily waterproofing, including swimming, washing hands, and taking showers.

Image: The smart ring submerged in water, illustrating its 5ATM waterproof capability.
Please remove the ring and clean it after bathing to avoid skin irritation caused by residue from shower products inside the ring.
2. Charging Case
The charging case provides approximately 13 full charges for the ring. A single charge of the ring offers an endurance of about 3-5 days.

Image: Diagram showing the charging case providing multiple charges for the smart ring.
Troubleshooting
- Ring not connecting to app: Ensure Bluetooth is enabled on your phone. Make sure the ring is charged and the heart rate light is active. Restart both the app and your phone if necessary.
- Inaccurate data: Ensure the ring is worn snugly on the recommended finger (index, middle, or ring finger) and that the sensors are clean. Avoid wearing it on fingers narrower than the knuckles.
- Charging issues: Verify the charging cable and case are properly connected. Check for any debris in the charging ports.
Specifications

Image: Detailed product parameter diagram including dimensions and technical specifications.
| Feature | Specification |
|---|---|
| Brand Name | COLMI |
| Model Number | COLMI R03 |
| Waterproof Grade | 5ATM |
| Case Material | STEEL (Titanium Steel Shell) |
| Product Weight | 4.4g |
| Battery Capacity (Ring) | 15mAh (#7,#8,#9), 18mAh (#10,#11,#12,#13) |
| Battery Capacity (Charging Case) | 200mAh |
| Charging Method | Magnetic Charging |
| Charging Port | Type C |
| Main Control Chip | BlueX Micro RF03 |
| Bluetooth Version | 5.0 |
| App | Qring |
| Activity Tracking | Activity Tracker, Step Tracker, Distance Tracker, Calorie Tracker |
| Metrics Measured | Heart Rate Monitor, Sleep Monitor, Blood Oxygen Monitor, Stress Monitor |
| Display Screen | No |
| NFC Support | No |
| Certifications | CE, FCC |
| Origin | China |
Ring Sizing Guide
The COLMI R03 Smart Ring is available in various sizes. Please refer to the table below and the measurement guide to find your correct size.

Image: Ring size chart with inner diameter and perimeter in mm and inches.

Image: Step-by-step guide on how to accurately measure your finger size using a non-elastic rope or paper.
- STEP 1: Take a long non-elastic rope or paper, and wrap it around your finger.
- STEP 2: Make the rope or paper fit closely to your fingers to avoid being too loose or too tight, which may cause size deviation.
- STEP 3: Mark the junction part on the rope or paper.
- STEP 4: Lay the rope or paper flat, and measure the length. It is recommended to measure multiple times for more accurate data.
Warranty & Support
COLMI products are designed for durability and performance. For any issues or support, please refer to the following:
- Warranty: The product comes with a standard manufacturer's warranty. Please retain your proof of purchase for warranty claims.
- Returns: Enjoy free returns within 90 days of purchase.
- Fast Delivery Guarantee: If delivery is delayed, a $1.00 coupon may be issued. Full refund if the package is lost or damaged upon arrival.
- Customer Service: For further assistance, please contact COLMI customer support through the retailer's platform or the official COLMI website.
- Personal Information Protection: Your card information is securely protected and will not be leaked. Personal information security is a top priority.





