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
Shell material
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.
Thin and light design
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.
Inner shell material
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.
Finger health
Monitor your health status
Sleep monitoring
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 test
Blood oxygen is one of the important indicators of human health. The smart ring COLMI R02 can record your blood oxygen data.
Heart rate monitoring
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.
Intelligent interaction
Use smarter in your life
Casual exercise
Record steps, calorie consumption, distance and other data, support your multi-sport mode, and the APP will generate activity statistics.
5ATM waterproof
The fully enclosed structure easily copes with daily waterproofing and supports wearing for hand washing, rain, etc. to meet your various waterproofing needs.
Fast charging
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.
Why Choose the Colmi R02?
Stealthy Health Tracking: Unlike a glowing watch screen, the R02 tracks your vitals discreetly. Itâs 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.