{"product_id":"colmi-r02-smart-ring-silver-size-9-heart-rate-spo2-tracking-with-portable-charging-case","title":"COLMI R02 Smart Ring Silver (Size 9) — Heart Rate \u0026 SpO2 Tracking with Portable Charging Case","description":"\u003cp\u003e\u003cstrong\u003eCOLMI R02 is a compact smart ring that tracks heart rate, blood oxygen, sleep patterns and daily activity while charging in a portable case—no subscription required.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe COLMI R02 Smart Ring puts wearable monitoring into a slim metal band designed for everyday comfort. Paired with a small charging case, the ring continuously records core health and activity signals and syncs them to your phone, without any monthly app fees. It’s built to be discreet enough for daily wear yet capable of delivering useful trend data for your routines and workouts.\u003c\/p\u003e\n\n\u003ch3\u003eHow accurate is the COLMI R02 for heart rate and blood oxygen?\u003c\/h3\u003e\n\u003cp\u003eThe R02 uses optical sensors to capture pulse and SpO2 readings throughout the day; while not a medical device, it provides reliable trend tracking for wellness monitoring. For best results, wear the ring snugly on a stable finger and avoid excessive motion during spot checks.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e24\/7 heart rate sampling with adjustable monitoring intensity modes.\u003c\/li\u003e\n  \u003cli\u003eBlood oxygen measurements available on demand for quick SpO2 checks.\u003c\/li\u003e\n  \u003cli\u003eNighttime-focused sleep algorithm calibrated to detect sleep stages cleanly.\u003c\/li\u003e\n  \u003cli\u003eNot intended to replace clinical diagnostics—use for lifestyle insights.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat battery life can I expect and how does charging work?\u003c\/h3\u003e\n\u003cp\u003eBattery endurance varies with monitoring frequency: basic tracking offers the longest runtime while continuous heart-rate monitoring shortens it. The included portable charging case refuels the ring on the go and protects it when not worn.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBasic Mode: 4–5 days (steps and basic sleep tracking).\u003c\/li\u003e\n  \u003cli\u003eBalanced Mode: 3–4 days (hourly heart-rate syncs).\u003c\/li\u003e\n  \u003cli\u003eEnhanced Mode: 2–3 days (real-time heart-rate monitoring).\u003c\/li\u003e\n  \u003cli\u003eCharging case and cable included for convenient portable charging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I choose the right size and wear the ring for best results?\u003c\/h3\u003e\n\u003cp\u003eCOLMI recommends using the sizing kit or measuring your finger to select the correct ring size before purchase to avoid returns. A proper fit prevents data errors by keeping the sensors aligned with the skin and reducing motion artifacts.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUse the sizing kit or consult the size chart before ordering.\u003c\/li\u003e\n  \u003cli\u003eThe ring should be snug but comfortable on the finger’s base.\u003c\/li\u003e\n  \u003cli\u003eRemove loose-fitting rings to avoid false readings from movement.\u003c\/li\u003e\n  \u003cli\u003eWear consistently on the same finger for better trend accuracy.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat extra features make the R02 practical for everyday life?\u003c\/h3\u003e\n\u003cp\u003eBeyond core biometric tracking, the ring includes convenient tools that make it useful beyond health data. These extras are designed to enhance daily tasks and integrate into social and fitness routines.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRemote camera control lets you trigger smartphone photos with a gesture.\u003c\/li\u003e\n  \u003cli\u003eActivity tracking filters out stationary hand movements for cleaner step data.\u003c\/li\u003e\n  \u003cli\u003eNo app subscription—full features accessible without recurring fees.\u003c\/li\u003e\n  \u003cli\u003eComes with one ring, charging case, cable, and a user manual for simple setup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this product is for: The COLMI R02 Smart Ring is aimed at people who want a low-profile wearable that captures everyday health and activity trends without ongoing costs. It’s a good fit for commuters, fitness-minded users who prefer minimal hardware, and anyone seeking a compact alternative to wrist wearers. If you value a sleek ring form factor, portable charging, and easy-to-read trend data, the R02 delivers practical features for daily wellness tracking.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the COLMI R02 require a monthly subscription?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No, the COLMI R02 works without any app subscription fees—all core features are available immediately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What should I do if my ring readings seem off?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Ensure the ring fits snugly, wear it on a stable finger, and avoid heavy movement during checks; recalibrate by re-pairing if needed.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"COLMI","offers":[{"title":"Default Title","offer_id":48413656383645,"sku":"B0FKSWTNRD","price":78.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/9596\/1757\/files\/colmi-r02-front-view-silver_373967da-6b4d-46d0-aec8-83e2493e9e3a.jpg?v=1781276470","url":"https:\/\/nexoltic.com\/products\/colmi-r02-smart-ring-silver-size-9-heart-rate-spo2-tracking-with-portable-charging-case","provider":"Nexoltic","version":"1.0","type":"link"}