Smartring Colmi R03 19.8MM 10 (gold)

Now you can access the most important information at your fingertips. The Colmi R03 smart ring provides convenient access to health and exercise reports from the QRing app. What's more, it is water resistant (5ATM), corrosion and abrasion resistant, so you can comfortably use it every day. The included case will allow you to safely store the ring and recharge it. In addition, the lightweight (4.7g) design means comfort.

Monitor your health status

Colmi R03 will allow you to take care of your health. Smartring monitors sleep, its phases and quality, so you can eliminate bad habits. In addition, it measures your heart rate for the past 24 hours, which will allow you to understand the state of your body both at rest and during exercise. You can also measure your blood oxygen level and check all your health data in the dedicated QRing application.

Increase the effectiveness of your workouts

Exercise more effectively with Colmi R03. The smart ring accurately records data on the number of steps, calories burned and distance traveled. In addition, you can choose from 21 sports modes. What's more, the Smartring is 5ATM waterproof, which means you can use it during intense workouts and swimming without worrying about injuries.

Dedicated application

Download the QRing app, compatible with Android and iOS, and get the most out of your Colmi R03. From its level, you can monitor all parameters and physical activity. It generates daily, weekly and monthly reports of your measurements so you can react quickly to any abnormalities.

Long working hours

Use the Colmi R03 for days without worrying about draining it. The smart ring works for about 5-7 days and charging takes about 1 hour. The included case not only makes it easy to store, but also allows you to charge the device. Its powerful battery allows the ring to renew its energy up to 13 times on a single charge.

Included

• smart ring

• USB-C cable

• charging case

• user manual

Same summary

The Colmi R03 Smartring is suitable for the user who wants to discreetly monitor their health and activity throughout the day without having to wear a watch. The small and lightweight design makes the ring convenient for sports, exercise or everyday use where a less noticeable wearable product is sought. However, users who expect advanced features such as contactless payment or complex applications may not be suitable for this model. Choosing the right size is essential, as it directly affects the comfort and accuracy of the measurements.

Recommendation source: Enaa guides and team experiences.

User view

Smart rings like the Colmi R03 are most often chosen by those who want to track sleep, heart rate, and movement in a more minimalistic way. Such a ring is popular with users who want an unobtrusive overview of their data and don't mind wearing a larger device on their wrist.

Many users choose Colmi products because of their practical usability and relatively simple ecosystem that allows for quick connection to the phone and easy data management.

Why buy at Enaa

At Enaa, buying is a sensible choice because you can quickly compare different smart rings based on size, functions and usability in everyday life. In addition, we offer clearly categorized filters so that every consumer can find the right product for themselves.

Answers to frequently asked questions

How do I choose the right smart ring size?

The right size is key to comfort and measurement accuracy, so we recommend measuring your finger and comparing it to the manufacturer's official size chart before purchasing.

Is Colmi R03 compatible with all smartphones?

The Colmi R03 model most often supports connection to Android and iOS devices, but always check the compatibility of your phone with the application description beforehand.

What can I track with this smart ring?

The Smartring Colmi R03 allows you to monitor basic data such as sleep, heart rate, and daily activity, but for more advanced features, you should check the details in the specification of each model.

Is the ring suitable for sports activities and contact with water?

The ring has a certain level of water and sweat resistance, which allows for basic use in sports, but intensive exposure to water or dust is not recommended without additional protection.

What do I do if I'm not using all the ring's features?

You can adjust settings and turn off some features in the app, extending battery life and using the ring only for the data you need.

Description updated: April 2026