Colmi R12 Smart Ring 18.3mm 8 (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 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 convenient charging without cables.

Included

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

User view

The Colmi R12 smart ring is ideal for anyone who wants to effortlessly monitor their health and activities – right on their wrist, without additional devices. It is most often used by younger consumers who like to follow trends and are looking for a modern way to monitor daily movements, sleep and vital signs. Due to its minimalist design and lightness, the ring is a discreet but extremely useful accessory for studying, sports or in the office.

Users swear by the Colmi brand for its innovation, quality craftsmanship, and wider recognition in the world of smart wearables. The ring fits perfectly into the fast-paced everyday life, where it is important that technology does not interfere, but rather smartly complements the lifestyle of the modern generation.

Why buy at Enaa

Customers often choose Enaa because we offer proven quality and detailed product reviews from our expert team, plus our smart ring information is always up-to-date and reliable. So you can confidently choose the right model for your style and needs.

Answers to frequently asked questions

Is the Colmi R12 smart ring suitable for everyday use during sports or at school?

Of course, the ring is lightweight, discreet, and durable, so you can wear it without any problems during sports activities, studying, working, or even while sleeping.

How compatible is the Colmi R12 with phones from different brands?

The Colmi R12 works with most smartphones that support Bluetooth connectivity, regardless of whether you use an Android or iOS device.

What health data does the ring measure and how accurate is this data?

The ring monitors basic vital signs such as heart rate, step count, sleep quality, and activity throughout the day; the accuracy of the data is high for everyday use, but for medical purposes, we recommend consulting a specialist.

How does the ring charge and how long does the battery last?

The ring is charged with the included cable via a special adapter, and the battery usually lasts for several days with normal use.

Is the smart ring water resistant?

The Colmi R12 is designed to be dust and splash resistant, so you can wear it even when washing your hands or in inclement weather.

Description updated: October 2025