Colmi R12 Smart Ring 17.9mm 7 (Black)

Colmi R12 is a smart ring 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 can 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 wakefulness - 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.

Sport 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

Warranty: 12 months

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Same summary

The Colmi R12 smart ring in 17.9 mm size is suitable for those looking for a discreet way to monitor basic health data and activity throughout the day without wearing a smartwatch. Due to its minimalist design and the possibility of wearing it at night, it will be especially appreciated by users for whom comfort is essential. Before purchasing, it is important to pay attention to the correct size of the ring and check compatibility with your mobile device, as this significantly affects the accuracy of measurements and the user experience. The model is less suitable for more demanding users who want advanced features or detailed analyses.

Recommendation source: Enaa guides and team experiences.

User view

Smart rings are most often used by users who want to monitor their health and activities in the most unobtrusive way possible – for example, during daily tasks, while sleeping, or even during sports activities. Such a ring is practical for those who do not like larger wearable devices, but at the same time want basic statistics about steps, sleep, or heart rate always at hand.

Users often trust the Colmi brand, as its offering combines easy connectivity with mobile phones and ensures reliable data monitoring in a compact format.

Why buy at Enaa

At Enaa, you can expect a clear presentation of product functionality, professional support in choosing smart rings, and easy search for similar models for comparison.

Answers to frequently asked questions

Is the Colmi R12 ring suitable for continuous wear, even at night or while showering?

The model is designed for all-day wear, including sleeping, but it is always advisable to check the water resistance specifications in the product description. For regular use in water or during sports, attention should be paid to the water resistance level.

What should I do if I'm not sure about the size?

Choosing the right size is essential for comfort and accuracy of measurements, so we recommend that you check your size using the manufacturer's size chart or measure your finger circumference before purchasing.

Does the smart ring support connection with all types of smartphones?

The model's connectivity applies to Android and iOS devices, but it is crucial to check support for your operating system version and the ability to download the appropriate application.

How long does the battery last with normal use?

The autonomy of smart rings depends on the functions and frequency of use, but in basic measurements, most rings offer a few days without charging. For exact information, check the description of the product itself.

Can I use the ring as an alternative to a smartwatch?

A smart ring is a more discreet choice for monitoring basic data, but it doesn't offer everything a smartwatch can offer - especially when it comes to advanced tracking or access to a larger number of notifications.

Description updated: June 2026