Smartring Colmi R03 18.9MM 9 (black)

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 Colmi R03 for days without worrying about draining. The smart ring works for about 3-5 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

Smartring Colmi R03 18.9MM 9 (black) is a discreet smart ring designed to monitor health and activity throughout the day without the user having to wear a watch or bracelet. It is suitable for those who want a small and lightweight wearable product for daily monitoring of sleep, steps and basic health, while also appreciating the simple connection to their phone. The ring is best suited for users who emphasize comfort and discretion, but if you are more often involved in sports or need advanced features, it is good to make sure of resistant materials and supported app functions. Warning: choosing the right size is crucial for accurate measurements and wearing comfort.

Recommendation source: Enaa guides and team experiences.

User view

The Colmi R03 smart ring is often the choice of users who want to track their daily heart rate, sleep or steps without any conspicuous equipment on their wrist. This approach is best suited for those who like to stay active, but at the same time want technology to be almost invisible in their daily life. The ring is useful at work, on the go or during sports activities, when you want minimalism and as few distractions as possible.

Users often trust the Colmi brand due to their focus on simple yet useful wearables that integrate well into the existing smartphone ecosystem.

Why buy at Enaa

At Enaa, you can choose the Colmi R03 smart ring from proven models, with the modern platform allowing you to quickly compare and easily find the right size or additional information that makes your decision easier.

Answers to frequently asked questions

How do I know which size of the Colmi R03 smart ring is right for me?

It is recommended to accurately measure the circumference of your finger and follow the manufacturer's size chart, as choosing the correct size is essential for comfortable wear and reliable measurements.

Is Colmi R03 compatible with all phones?

The Smartring Colmi R03 requires compatibility with the Android or iOS operating system for its use, but before purchasing, check whether your phone model supports all the ring's functionalities.

What is the battery life of the Colma R03?

Battery life is designed for daily use, but may vary depending on the intensity of measurements and the frequency of synchronization with the phone.

Can I wear the ring during sports or in a humid environment?

The Colmi R03 is suitable for use during exercise and everyday tasks, but for more intense sports activities or greater exposure to water, check the manufacturer's water resistance level.

Does the ring allow you to receive notifications from your phone?

Smartring Colmi R03 supports basic notifications, but options may be limited depending on the compatibility of the app and your phone's operating system.

Description updated: April 2026