Smartring Colmi R03 20.3MM 11 (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 20.3MM 11 (gold) smart ring is suitable for users who want to discreetly monitor their health, activity and receive basic notifications without additional devices on their wrist. Due to its small size and lightness, it is convenient for everyday wear, but this also means a somewhat limited set of functions compared to larger wearable devices. The model is especially interesting for those who want basic support for monitoring the number of steps, heart rate and sleep, but it is important to check compatibility with the phone in advance and choose the right ring size for accurate measurements. However, it will be less suitable for users who expect advanced functionalities or require high water resistance in very active conditions.

Recommendation source: Enaa guides and team experiences.

User view

Most users of smart rings like the Colmi R03 appreciate the ability to discreetly and comfortably track daily activities without wearing a watch or bracelet. Such a product is popular among those who simply want to receive basic health information and notifications, but who value minimalist aesthetics and the feeling that nothing interferes with everyday use. It is also often chosen by those who spend a lot of time exercising or doing sports and want to avoid having to worry about additional equipment on their wrist.

Users like to choose Colmi products because they offer a good balance between usability, design, and a wider range of wearable devices for daily health monitoring.

Why buy at Enaa

When shopping at Enaa, you can ensure a quick and easy online experience, where information about smart rings is clearly presented, and at the same time, you have different models collected in one place, making it easier to compare features and find the one that best suits your needs.

Answers to frequently asked questions

Is the Colmi R03 ring suitable for all-day wear, even while sleeping?

Yes, this model is designed for continuous activity and sleep monitoring, but for accurate measurements, it is important to choose the appropriate size that does not cause discomfort even at night.

What should I check before buying regarding phone compatibility?

It is recommended that you check whether your phone is equipped with the appropriate operating system (Android or iOS) with which the ring is compatible, and whether it allows the installation of the corresponding application for data synchronization.

How is the water resistance of the Colmi R03 smart ring?

This model offers basic resistance to moisture and sweat, which is sufficient for everyday use. For intensive sports use or contact with water, it is recommended to use the product according to the manufacturer's instructions and avoid large amounts of water.

What functionality is most important when choosing a smart ring?

Most often, users are looking for reliable activity tracking (steps, heart rate, sleep) and basic notification features. When choosing a smart ring, comfort, size, and easy management via the app are also important.

Can the Colmi R03 smart ring be used without a phone connection?

Most functions require a connection to a smartphone, as data synchronization and additional settings are only possible via the app on the phone.

Description updated: April 2026