{"product_id":"colmi-r02-smart-ring-silver-size-8-health-tracker-with-heart-rate-spo2-portable-charging-case","title":"COLMI R02 Smart Ring Silver (Size 8) — Health Tracker with Heart Rate \u0026 SpO2, Portable Charging Case","description":"\u003cp\u003e\u003cstrong\u003eThe COLMI R02 is a compact smart ring that tracks heart rate, blood oxygen, sleep and daily activity while charging in its portable case—no subscription required.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe COLMI R02 combines discreet wearability with continuous health and activity monitoring for both women and men. Designed to sit comfortably on your finger, it offers around-the-clock heart rate and blood oxygen sensing, sleep analysis calibrated for night cycles, and basic activity tracking without ongoing subscription fees. The package includes a compact charging case so the ring can be recharged on the go, plus a charging cable and manual.\u003c\/p\u003e\n\n\u003ch3\u003eHow accurate are the heart rate and blood oxygen readings?\u003c\/h3\u003e\n\u003cp\u003eThe R02 provides frequent optical heart-rate monitoring and spot measurements for blood oxygen (SpO2) using on-board sensors. It is intended for day-to-day wellness tracking and trend observation rather than clinical diagnosis.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e24\/7 heart-rate monitoring with adjustable sampling frequency.\u003c\/li\u003e\n  \u003cli\u003ePeriodic SpO2 spot checks for short-term oxygen trends.\u003c\/li\u003e\n  \u003cli\u003eAlgorithms filter out typical hand movements to reduce noise.\u003c\/li\u003e\n  \u003cli\u003eBest used for trend awareness, not medical decisions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat is the battery life and how does the charging case work?\u003c\/h3\u003e\n\u003cp\u003eBattery duration depends on selected monitoring intensity. The included portable charging case stores and recharges the ring so you can top up power anywhere without searching for an outlet.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBasic Mode: roughly 4–5 days (steps and basic sleep tracking).\u003c\/li\u003e\n  \u003cli\u003eBalanced Mode: about 3–4 days (heart rate sync every 60 minutes).\u003c\/li\u003e\n  \u003cli\u003eEnhanced Mode: around 2–3 days (continuous real-time heart-rate monitoring).\u003c\/li\u003e\n  \u003cli\u003eCompact charging case and cable included for convenient recharging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDoes the R02 require a subscription or special app purchases?\u003c\/h3\u003e\n\u003cp\u003eNo subscription fees are required to use the core features of the COLMI R02. Once paired, you can access heart-rate data, sleep summaries, and activity trends through the companion app without monthly charges.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNo app subscription or hidden monthly fees.\u003c\/li\u003e\n  \u003cli\u003eCore functions unlocked immediately after pairing.\u003c\/li\u003e\n  \u003cli\u003eDaily health trends and long-term activity stored locally or in the app.\u003c\/li\u003e\n  \u003cli\u003eRemote camera control included for quick phone photos.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I choose the correct ring size for comfort and accuracy?\u003c\/h3\u003e\n\u003cp\u003eA proper fit preserves sensor contact and ensures accurate readings. COLMI recommends using the sizing kit or measuring your finger with the size chart before ordering to avoid exchanges.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePurchase the COLMI sizing kit or follow the size chart closely.\u003c\/li\u003e\n  \u003cli\u003eA snug but comfortable fit keeps sensors aligned with skin.\u003c\/li\u003e\n  \u003cli\u003eIncorrect sizing can cause data inconsistencies or discomfort.\u003c\/li\u003e\n  \u003cli\u003eContact COLMI support for after-sales help if needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The COLMI R02 is aimed at people who want a low-profile wearable to monitor wellness trends—heart rate, SpO2, sleep patterns and daily activity—without subscription costs. It suits commuters, busy professionals, and anyone who prefers ring-style wearables to wrist devices, provided they choose the correct size for a consistent fit.\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: Do I need to pay a monthly fee to use the COLMI R02?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The COLMI R02 does not require any app subscription; core features are available without monthly charges.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How long does the battery last between charges?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Battery life varies: Basic Mode 4–5 days, Balanced 3–4 days, Enhanced 2–3 days; the charging case adds convenient recharges.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"COLMI","offers":[{"title":"Default Title","offer_id":48413656219805,"sku":"B0FKSG6W79","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.jpg?v=1781276438","url":"https:\/\/nexoltic.com\/products\/colmi-r02-smart-ring-silver-size-8-health-tracker-with-heart-rate-spo2-portable-charging-case","provider":"Nexoltic","version":"1.0","type":"link"}