Colmi R12 19.1MM 9 Smart Ring (Black)

Colmi R12 is a smart ring equipped with an LED display, health monitoring sensors and gesture control functions. It monitors heart rate, blood oxygen level, sleep and physical activity 24 hours a day. It supports various sports modes and allows you to remotely control your smartphone. With 1 ATM water resistance, you can wear it in the shower and while swimming, and the battery provides up to 5 days of operation or up to 15 days in standby mode. The included charging station will allow you to quickly and conveniently restore the power of the device.

Easy-to-read display

The built-in LED display, located directly on the ring, lets you quickly view key information – without having to reach for your phone. You can check the current time, number of steps taken, battery level and current heart rate. This is especially useful in situations where using a smartphone is inconvenient or impossible – such as when cycling or exercising.

24/7 health and activity monitoring

Colmi R12 is equipped with advanced biological sensors that analyze heart rate, blood oxygen level (SpO₂), sleep and stress levels 24 hours a day. Heart rate is measured in real time, and the ring is able to detect even small changes, allowing for a better understanding of the body's reactions in different situations. Sleep quality is assessed based on its phases - light, deep and awake - and the data is presented in the application in the form of clear graphs. This allows you to monitor your habits and take concrete measures to improve your well-being and recovery.

Sports modes and exercise tracking

The ring supports multiple exercise modes – including walking, running, cycling or swimming. During activity, the Colmi R12 records your heart rate, distance covered, number of steps, exercise time and calories burned. This allows you to accurately monitor your progress and better plan your workout. The data collected by the ring is synchronized with the app, giving you access to daily, weekly and monthly statistics.

Easy gesture control and practical functions

The Colmi R12 also lets you control your smartphone with gestures. With a simple hand movement, you can scroll the screen in apps like TikTok or take a photo remotely with your phone. This feature comes in handy when taking selfies or videos without touching the screen. The ring also allows you to manually count repetitions, for example during prayer, affirmations or exercise. Simply press the button on the case to record the next event - this data is also saved in the app.

Robust design

Colmi R12 has a water resistance of 1 ATM, which means that you can easily use it while washing your hands, bathing and even swimming in the sea or pool. In addition, the built-in rechargeable battery allows you to use the ring for about 5 days, depending on the intensity of use. In standby mode, the operating time is extended to 15 days. A charging station is included, which allows for easy and quick charging without cables.

Included

• smart ring
• charging base
• USB-C to USB-C cable
• user manual

Same summary

The Colmi R12 smart ring is a discreet companion for users who want to monitor their health and activities daily without wearing a watch or bracelet. It is designed for those who value comfort and a lightweight feel, while also expecting basic functions such as sleep monitoring, heart rate monitoring and notifications in connection with the phone. It is important to choose the right size, as this affects the comfort and accuracy of measurements - this model is particularly suitable for everyday wear, during sports or at work, where a minimalist, less noticeable design is desired. The smaller format also means some compromise in terms of the amount of functions compared to larger devices, but users with basic needs will usually find this approach most suitable.

Recommendation source: Enaa guides and team experiences.

User view

Users of smart rings like the Colmi R12 are looking for a simple solution to monitor their well-being, health and daily habits without standing out or feeling like an additional burden. Such a product is especially attractive to those who find traditional smart wearables too conspicuous or distracting – for example, in the office, in meetings or even while sleeping. Due to its lightness and small size, the Colmi R12 is also suitable for sports and recreational users who want a detailed insight into their activities and sleep without restricting their movement.

Many users appreciate the Colmi brand's offerings, as they provide technologically advanced solutions at affordable prices, while ensuring ease of use and reliability in everyday use.

Why buy at Enaa

On Enaa, you have a wide selection of smart rings in one place, supported by carefully selected advice from our team, which helps you choose the right model according to your needs. Our offer includes only products from proven brands, so you can trust the quality and experience of other users from our community.

Answers to frequently asked questions

Do I need to pay special attention to the size when buying the Colmi R12 smart ring?

Yes, choosing the right size is key to comfortable wear and accurate measurements. We recommend that you measure your finger accurately before purchasing and, if in doubt, check the manufacturer's size chart.

Is the Colmi R12 compatible with all smartphones?

The Colmi R12 ring is compatible with most modern phones running Android or iOS. It is recommended to check the support for your operating system version and application before purchasing.

Can I use the ring during sports or water activities?

The Colmi R12 is designed to withstand everyday use, including light sports activities and contact with sweat. However, it is not intended for diving or prolonged exposure to water.

How is the data from the smart ring synced to the phone?

The connection is usually made through a dedicated app that allows you to transfer data from the ring to your phone in an easy way.

Who is the R12 smart ring not recommended for?

The model may not be best suited for those who need advanced features like contactless payment or highly detailed sports analytics, as the R12 is more focused on basic health monitoring and notifications.

Description updated: April 2026