Stainless steel shell: The COLMI R02 smart ring shell is made of stainless steel, which is highly corrosion-resistant, beautiful and comfortable to wear.
Health function: COLMI R02 smart ring can monitor blood oxygen, heart rate, sleep, etc., and pay attention to your health.
Sports recording: COLMI R02 smart ring can record your sports status and let you know your sports information at all times.
| Feature | Specification Details |
|---|---|
| Model | Colmi R02 |
| Material | Stainless Steel (Outer) + Hypoallergenic Resin (Inner) |
| Available Sizes | Size 8 (18.1mm dia) / Size 9 (18.9mm dia) |
| Thickness / Weight | 2.7mm / Approx. 4.4g |
| Main Chipset | BlueX Micro RF03 |
| Connectivity | Bluetooth 5.0 (BLE) |
| Water Resistance | 5ATM & IP68 (Swimming & Rain Proof) |
| Health Sensors | Vcare VC30F Heart Rate & SpO2 Sensor |
| Motion Sensor | STK8321 Accelerometer |
| Sports Modes | 21 Professional Modes |
| Battery Capacity | 17mAh Lithium Polymer |
| Battery Life | Up to 6 Days (Typical Use) |
| Charging Method | Magnetic USB Charging Cable |
| Companion App | QRing (Android 5.1+ / iOS 8.0+) |
The Colmi R02 Smart Ring is designed for those who want the power of a fitness tracker without the bulk of a traditional smartwatch. Its exterior shell is made of durable, corrosion-resistant stainless steel, while the inner surface uses hypoallergenic epoxy resin to ensure comfort for sensitive skin. Weighing only 4.4 grams, it is virtually unnoticeable on the finger, making it the ideal device for continuous sleep tracking and daily activity monitoring.
Despite its tiny form factor, the R02 is equipped with the BlueX Micro RF03 chipset and advanced sensors that track 21 different sports modes. It captures essential health metrics, including real-time heart rate and blood oxygen saturation, and syncs this data via Bluetooth 5.0 to the QRing app. One of its most impressive features is its 5ATM & IP68 water resistance, meaning you can wear it while washing hands, showering, or even swimming in shallow water. The 17mAh battery provides up to 6 days of life on a single charge and is easily powered up via a dedicated magnetic charging cable.
status and let you know your sports information at all times.
Not only smart but also comfortable and comfortable
The outer ring is as gentle as jade, with a stainless steel shell and tens of thousands of CNC grinding and polishing operations to achieve ultimate durability.
Innovative and non-sensory wearing, with a thickness of 2.7mm, the design is lighter and thinner, making it more comfortable and convenient to wear.
The inner ring is tough and durable, while the smooth inner shell uses hypoallergenic epoxy resin for a quality feel from the outside to the inside.
Monitor your health status
When you fall asleep, the ring can automatically monitor your sleep quality and generate a sleep report to help you develop good sleep habits.
Blood oxygen is one of the important indicators of human health. The smart ring COLMI R02 can record your blood oxygen data.
By tracking your heart rate around the clock, you can understand your physical condition during exercise and relaxation during the day and self-check your physical condition in advance.
Use smarter in your life
Record steps, calorie consumption, distance and other data, support your multi-sport mode, and the APP will generate activity statistics.
The fully enclosed structure easily copes with daily waterproofing and supports wearing for hand washing, rain, etc. to meet your various waterproofing needs.
It charges quickly and has a 15mAh capacity polymer lithium battery, which has a long battery life. The APP can check the real-time battery level.
Stealthy Health Tracking: Unlike a glowing watch screen, the R02 tracks your vitals discreetly. It’s perfect for people who prefer traditional watches but still want smart health data.
Superior Comfort: The 2.7mm thickness and ultra-lightweight build eliminate the "wrist fatigue" often associated with wearing smartwatches to bed for sleep tracking.
Built for the Elements: With 5ATM water resistance, it is one of the few budget smart wearables you can truly wear 24/7, including during water-based activities.
Premium Build: The CNC-polished stainless steel provides a jewelry-grade finish that looks like a high-end fashion accessory rather than a tech gadget.
Cost-Effective Innovation: It offers the core functionality of premium smart rings (like Oura) at a fraction of the cost, making it the best entry-point into smart ring technology.
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