{"product_id":"colmi-r02-smart-ring-size-12-21-3-mm-black-charging-case","title":"COLMI R02 Smart Ring, Size 12, 21.3 mm (Black) + Charging Case","description":"\u003cdiv style=\"font-size: 1.1em;\"\u003e\n\u003ch2\u003eColmi R02 – a discreet smart ring for everyday health monitoring\u003c\/h2\u003e\n\u003cdiv class=\"context-badges\"\u003e \u003cspan\u003eFor daily activity tracking\u003c\/span\u003e \u003cspan\u003eDiscreet and lightweight design\u003c\/span\u003e \u003cspan\u003eLong-term wearing comfort\u003c\/span\u003e\n\u003c\/div\u003e The Colmi R02 smart ring (size 12, black) with charging case allows discreet health and activity monitoring without a wristwatch.\u003cul\u003e\n\u003cli\u003e Continuous heart rate and sleep monitoring\u003c\/li\u003e\n\u003cli\u003e Suitable for users who want a less noticeable wearable product\u003c\/li\u003e\n\u003cli\u003e Comfortable fit for all-day wear\u003c\/li\u003e\n\u003cli\u003e Easy synchronization with your phone\u003c\/li\u003e\n\u003cli\u003e Practical charging case included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cbr\u003e\u003cbr\u003e\u003ch3\u003eCOLMI R02 smart ring, size 12\u003c\/h3\u003e\u003cp\u003e The COLMI R02 smart ring in size 12 (21.3 mm) in black is a lightweight and discreet smart ring that combines health monitoring with sports functions. The device measures heart rate and blood oxygen level (SpO2), analyzes sleep, and tracks daily activities and workouts in 21 sports modes. Thanks to Bluetooth 5.0, it works with the QRing application, stores data for later synchronization, and IP68 water resistance and the included charging case ensure convenient use for up to 6-7 days on a single charge. \u003c\/p\u003e\u003cp\u003e\u003cimg alt=\"Two elegant rings - gold and black - on a crystal plate on a white background\" border=\"0\" src=\"https:\/\/assets.innpro.pl\/21091\/27965\/16.jpg\"\u003e\u003c\/p\u003e\u003ch3\u003e Compact design and comfort\u003c\/h3\u003e\u003cp\u003e The ring is designed for maximum comfort during everyday use. Weighing only 4.7 g and measuring just 2.7 mm thick, you will quickly stop noticing it. It does not restrict hand movement and does not interfere with writing, physical work or exercise. This means that you can wear it continuously day and night without having to take it off. This allows for continuous data collection, even in moments that larger devices often miss. \u003c\/p\u003e\u003cp\u003e\u003cimg alt=\"Open black charging case with black smart ring inside\" border=\"0\" src=\"https:\/\/assets.innpro.pl\/21091\/27965\/14.jpg\"\u003e\u003c\/p\u003e\u003ch3\u003e Monitoring health and vital signs\u003c\/h3\u003e\u003cp\u003e COLMI R02 continuously monitors key vital signs such as heart rate and blood oxygen saturation (SpO2). Measurements are performed automatically in the background, meaning you don't have to manually activate each function. This makes it easy to observe changes in your body based on activity, stress, or rest. The data is stored in the device's memory, so even if you don't have your phone with you, nothing will be lost. After synchronizing with the app, you can analyze the results in a broader context and observe long-term changes. \u003c\/p\u003e\u003cp\u003e\u003cimg alt=\"A man's hand in a black jacket with a gold elegant ring on his index finger\" border=\"0\" src=\"https:\/\/assets.innpro.pl\/21091\/27965\/4.jpg\"\u003e\u003c\/p\u003e\u003ch3\u003e Sleep and recovery analysis\u003c\/h3\u003e\u003cp\u003e One of the ring's most powerful features is its sleep tracking, which starts automatically every night. The device recognizes sleep stages, such as light and deep sleep, and records your total rest time. This allows you to check not only how much sleep you're getting, but also how effectively your body is recovering. The data is stored locally and synced to the app in the morning, providing a complete picture of your sleep without the need for a constant connection. This feature will be especially appreciated by those who don't like to wear a watch to bed. \u003c\/p\u003e\u003cp\u003e\u003cimg alt=\"A bearded man sleeps on a pillow with a black smart ring on his finger in warm, homey light.\" border=\"0\" src=\"https:\/\/assets.innpro.pl\/21091\/27965\/5.jpg\"\u003e\u003c\/p\u003e\u003ch3\u003e Sports modes and activity\u003c\/h3\u003e\u003cp\u003e The ring offers 21 sports modes that cover the most popular forms of exercise. Whether you choose to walk, run, or do general exercise, the device tracks key activity metrics. This includes steps taken, distance covered, calories burned, and exercise duration. This gives you better control over your workout intensity and allows you to gradually increase your activity level. Regular data tracking also makes it easier to track your progress and stay motivated. \u003c\/p\u003e\u003cp\u003e\u003cimg alt=\"Woman in purple tracksuit running across bridge with black smart ring on left hand\" border=\"0\" src=\"https:\/\/assets.innpro.pl\/21091\/27965\/6.jpg\"\u003e\u003c\/p\u003e\u003ch3\u003e Connectivity and compatibility\u003c\/h3\u003e\u003cp\u003e Communication is handled by Bluetooth 5.0, which ensures a stable connection and low power consumption. When the ring is paired with the QRing app, all data is sent to one place, where it is presented in an easy-to-read format. Synchronization is fast and does not require complicated setup. The ring is compatible with Android 4.4 and higher, iOS 8.0 and higher, and Harmony OS, allowing easy connection with older and newer smartphones. \u003c\/p\u003e\u003cp\u003e\u003cimg alt=\"Cyclist's hands on black handlebars with a dark smart ring visible on his finger\" border=\"0\" src=\"https:\/\/assets.innpro.pl\/21091\/27965\/8.jpg\"\u003e\u003c\/p\u003e\u003ch3\u003e Charging case and battery life\u003c\/h3\u003e\u003cp\u003e The included case serves as a practical docking station, making it easy to store and charge the ring. Simply place it in the designated place to start charging via magnetic contacts. The ring itself offers a battery life of 6-7 days, allowing you to use it without frequently reaching for the charger. A full charge takes about an hour, so a short break is enough to restore full functionality. This solution works well for everyday use, where simplicity and speed of operation are important. \u003c\/p\u003e\u003cp\u003e\u003cimg alt=\"A raised hand with a closed black smart ring charging case floating above it\" border=\"0\" src=\"https:\/\/assets.innpro.pl\/21091\/27965\/12.jpg\"\u003e\u003c\/p\u003e\u003ch3\u003e Durability and materials\u003c\/h3\u003e\u003cp\u003e The titanium alloy housing increases resistance to scratches and everyday wear. As a result, the ring better withstands contact with hard surfaces and retains its aesthetic appearance for longer. The hypoallergenic resin inner lining improves wearing comfort and reduces the risk of irritation. This is especially important for a device that is worn for several hours a day. IP68 water resistance allows you to use the ring while washing hands, exercising or coming into contact with water without having to take it off. \u003c\/p\u003e\u003cp\u003e\u003cimg alt=\"A woman in white pants puts a small black smart ring case in her front right pocket.\" border=\"0\" src=\"https:\/\/assets.innpro.pl\/21091\/27965\/13.jpg\"\u003e\u003c\/p\u003e\u003ch3\u003e How to choose the right size\u003c\/h3\u003e\u003cp\u003e Choosing the right size is crucial for comfort and accuracy. To do this, wrap a thin string or thread around your finger, mark where it meets, and measure the length. Compare the result with the size chart. The model is available in sizes 8 (18.1 mm), 9 (18.9 mm), 10 (19.8 mm), 11 (20.6 mm), and 12 (21.3 mm), allowing it to fit a variety of users. For greater accuracy, it is best to measure in the evening, when your fingers are naturally slightly larger than in the morning. \u003c\/p\u003e\u003cp\u003e\u003cimg alt=\"Three elegant rings in black and gold on wooden jewelry stands\" border=\"0\" src=\"https:\/\/assets.innpro.pl\/21091\/27965\/15.jpg\"\u003e\u003c\/p\u003e\u003ch3\u003e Included\u003c\/h3\u003e\u003cul class=\"list-disc pl-5\"\u003e\n\u003cli\u003e COLMI R02 ring\u003c\/li\u003e\n\u003cli\u003e Charging case\u003c\/li\u003e\n\u003cli\u003e Magnetic cable\u003c\/li\u003e\n\u003cli\u003e User manual\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv class=\"table-wrapper\"\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e Manufacturer\u003c\/th\u003e\n\u003ctd\u003e COLMI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e Model\u003c\/th\u003e\n\u003ctd\u003e R02\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e Size\u003c\/th\u003e\n\u003ctd\u003e 12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e Inner diameter\u003c\/th\u003e\n\u003ctd\u003e 21.3mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e Color\u003c\/th\u003e\n\u003ctd\u003e black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e Outer material\u003c\/th\u003e\n\u003ctd\u003e titanium alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e Inner material\u003c\/th\u003e\n\u003ctd\u003e hypoallergenic resin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e Thickness\u003c\/th\u003e\n\u003ctd\u003e 2.7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e Weight\u003c\/th\u003e\n\u003ctd\u003e approximately 4.7 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e Health functions and monitoring\u003c\/th\u003e\n\u003ctd\u003e Heart rate measurement, blood oxygen saturation (SpO2) measurement, sleep monitoring, activity monitoring, activity level monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e Sports modes\u003c\/th\u003e\n\u003ctd\u003e 21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e Recorded data\u003c\/th\u003e\n\u003ctd\u003e Activity time, distance, calories, heart rate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e Connectivity\u003c\/th\u003e\n\u003ctd\u003e Bluetooth 5.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e Application\u003c\/th\u003e\n\u003ctd\u003e QR-scanning\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e System compatibility\u003c\/th\u003e\n\u003ctd\u003e Android 4.4 and above, iOS 8.0 and above, Harmony OS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e Charging case\u003c\/th\u003e\n\u003ctd\u003e yes (charge and storage function)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e Water resistance\u003c\/th\u003e\n\u003ctd\u003e IP68\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\u003cbr\u003e Warranty: 12 months\u003cbr\u003e\u003cbr\u003e The text is machine translated.\u003cbr\u003e\u003cbr\u003e\u003ch2\u003eSame summary\u003c\/h2\u003e\u003cp\u003e The COLMI R02 smart ring, size 12 (21.3 mm), is designed for users who want to discreetly monitor their health and activity without having to wear a watch or a larger smart device. It stands out in its functionality for measuring sleep, heart rate and counting steps, while allowing freedom of movement and comfort even during sports activities. The compromise compared to larger wearable devices is usually a smaller set of advanced functions and shorter autonomy during intensive use. Before choosing, it is advisable to check the compatibility with your mobile phone and choose the correct size for the most reliable measurements.\u003c\/p\u003e\u003cp\u003e \u003cem\u003eRecommendation source: Enaa guides and team experiences.\u003c\/em\u003e\u003c\/p\u003e\u003ch2\u003e User view\u003c\/h2\u003e\u003cp\u003e Typical users of this smart ring are individuals who rely on minimalist and comfortable wearable accessories in their everyday lives. The ring is particularly convenient for those who want continuous monitoring of activity, sleep or well-being, but at the same time do not like the feel of a watch on the wrist. In practice, it is also appreciated by people who are constantly on the move and want to quickly check key health data.\u003c\/p\u003e\u003cp\u003e Users often trust the \u003ca href=\"https:\/\/www.enaa.com\/znamka\/colmi\"\u003eColmi\u003c\/a\u003e brand for its affordability, modern design, and user-friendly ecosystem that allows for easy connectivity with phones.\u003c\/p\u003e\u003ch2\u003e Why buy at Enaa\u003c\/h2\u003e\u003cp\u003e At Enaa, you always receive up-to-date product information and realistic descriptions to help you choose a smart ring based on your real needs. With the offer in the smart ring category, we provide a quick overview of different models and sizes so you can find the solution that best suits your lifestyle.\u003c\/p\u003e\u003ch2\u003e Answers to frequently asked questions\u003c\/h2\u003e\u003ch3\u003e Is the ring suitable for use during sports and heavy sweating?\u003c\/h3\u003e\u003cp\u003e The ring is designed to be worn daily, even during sports activities, but it is recommended to check the water resistance level according to your activities. If you are frequently exposed to water or sweat a lot, choose a model with the appropriate resistance.\u003c\/p\u003e\u003ch3\u003e What should I check for compatibility with my phone?\u003c\/h3\u003e\u003cp\u003e Make sure your phone is compatible with the COLMI R02 ring app. Most often, support is provided for Android and iOS, but check that your operating system version meets the manufacturer's requirements.\u003c\/p\u003e\u003ch3\u003e How do I choose the right smart ring size?\u003c\/h3\u003e\u003cp\u003e The correct size is key to comfort and accuracy of measurements. It is best to measure yourself before purchasing according to the manufacturer's instructions or use the size charts on the product's official website.\u003c\/p\u003e\u003ch3\u003e How easy is it to charge a smart ring?\u003c\/h3\u003e\u003cp\u003e The COLMI R02 smart ring is charged with the included charging case, which allows for convenient and quick charging even on the go. Regular charging contributes to a better user experience.\u003c\/p\u003e\u003ch3\u003e Does the data sync with fitness or wellness apps?\u003c\/h3\u003e\u003cp\u003e Most smart rings in this category allow basic data synchronization with selected fitness or wellness apps. Check in the app beforehand which third-party platforms are supported for your model.\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e\u003cbr \/\u003e\n{\u003cbr \/\u003e\n  \"@context\": \"https:\/\/schema.org\",\u003cbr \/\u003e\n  \"@type\": \"FAQPage\",\u003cbr \/\u003e\n  \"mainEntity\": [\u003cbr \/\u003e\n    {\u003cbr \/\u003e\n      \"@type\": \"Question\",\u003cbr \/\u003e\n      \"name\": \"Ali je prstan primeren za uporabo pri športu in močnejšem potenju?\",\u003cbr \/\u003e\n      \"acceptedAnswer\": {\u003cbr \/\u003e\n        \"@type\": \"Answer\",\u003cbr \/\u003e\n        \"text\": \"Prstan je zasnovan tako, da omogoča vsakodnevno nošenje tudi med športnimi aktivnostmi, vendar je priporočljivo preveriti stopnjo vodoodpornosti glede na vaše aktivnosti. Če ste pogosto izpostavljeni vodi ali obilnemu potenju, izberite model z ustrezno odpornostjo.\"\u003cbr \/\u003e\n      }\u003cbr \/\u003e\n    },\u003cbr \/\u003e\n    {\u003cbr \/\u003e\n      \"@type\": \"Question\",\u003cbr \/\u003e\n      \"name\": \"Kaj moram preveriti glede kompatibilnosti s telefonom?\",\u003cbr \/\u003e\n      \"acceptedAnswer\": {\u003cbr \/\u003e\n        \"@type\": \"Answer\",\u003cbr \/\u003e\n        \"text\": \"Pazite, da je vaš telefon združljiv z aplikacijo prstana COLMI R02. Najpogosteje je podpora zagotovljena za Android in iOS, a preverite, ali vaša različica operacijskega sistema ustreza zahtevam proizvajalca.\"\u003cbr \/\u003e\n      }\u003cbr \/\u003e\n    },\u003cbr \/\u003e\n    {\u003cbr \/\u003e\n      \"@type\": \"Question\",\u003cbr \/\u003e\n      \"name\": \"Kako izberem pravo velikost pametnega prstana?\",\u003cbr \/\u003e\n      \"acceptedAnswer\": {\u003cbr \/\u003e\n        \"@type\": \"Answer\",\u003cbr \/\u003e\n        \"text\": \"Pravilna velikost je ključna za udobje in natančnost meritev. Najbolje je, da se pred nakupom izmerite po navodilih proizvajalca ali uporabite tabele velikosti na uradni spletni strani izdelka.\"\u003cbr \/\u003e\n      }\u003cbr \/\u003e\n    },\u003cbr \/\u003e\n    {\u003cbr \/\u003e\n      \"@type\": \"Question\",\u003cbr \/\u003e\n      \"name\": \"Kako enostavno je polnjenje pametnega prstana?\",\u003cbr \/\u003e\n      \"acceptedAnswer\": {\u003cbr \/\u003e\n        \"@type\": \"Answer\",\u003cbr \/\u003e\n        \"text\": \"Pameten prstan COLMI R02 se polni s priloženo polnilno torbico, kar omogoča praktično in hitro polnjenje tudi na poti. Redno polnjenje prispeva k boljši uporabniški izkušnji.\"\u003cbr \/\u003e\n      }\u003cbr \/\u003e\n    },\u003cbr \/\u003e\n    {\u003cbr \/\u003e\n      \"@type\": \"Question\",\u003cbr \/\u003e\n      \"name\": \"Ali se podatki sinhronizirajo s fitnes ali wellness aplikacijami?\",\u003cbr \/\u003e\n      \"acceptedAnswer\": {\u003cbr \/\u003e\n        \"@type\": \"Answer\",\u003cbr \/\u003e\n        \"text\": \"Večina pametnih prstanov te kategorije omogoča osnovno sinhronizacijo podatkov z izbranimi fitnes ali wellness aplikacijami. Predhodno preverite v aplikaciji, katere tretje platforme so podprte za vaš model.\"\u003cbr \/\u003e\n      }\u003cbr \/\u003e\n    }\u003cbr \/\u003e\n  ]\u003cbr \/\u003e\n}\u003cbr \/\u003e\n\u003c\/script\u003e\u003cp style=\"font-size: 0.9em; color: #666;\"\u003eDescription updated: May 2026\u003c\/p\u003e","brand":"Colmi","offers":[{"title":"Default Title","offer_id":58723369910603,"sku":null,"price":29.71,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/3457\/3643\/files\/colmi_r02_smart_ring_size_12_21_3_mm_black_charging_case_20258528.jpg?v=1791308228","url":"https:\/\/enaa.eu\/products\/colmi-r02-smart-ring-size-12-21-3-mm-black-charging-case","provider":"Enaa","version":"1.0","type":"link"}