{"product_id":"oura-ring-4-smart-ring-size-before-you-buy-with-or4-sizing-kit-size-5-stealth-2024-grade-a","title":"Oura Ring 4 Smart Ring Size Before You Buy with OR4 Sizing Kit Size 5 Stealth (2024)","description":"\u003cdiv class=\"container\"\u003e\n\u003cdiv class=\"top-header\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003cheader class=\"main-header\"\u003e\n\u003ch1\u003eOura Ring 4 Smart Ring - Size 5 - Stealth Titanium Finish (2024)\u003c\/h1\u003e\n\u003c\/header\u003e\n\u003csection class=\"product-description\"\u003e\n\u003ch3\u003eOVERVIEW\u003c\/h3\u003e\n\u003cp\u003eThe Oura Ring 4 Smart Ring (Size 5, Stealth) is a state-of-the-art wearable telemetry solution engineered to deliver medical-grade health insights in a seamless, discreet titanium design. Equipped with Smart Sensing technology and advanced optical biometric sensors, this device continuously tracks sleep quality, readiness, heart rate variability (HRV), and activity metrics without distracting screens or notifications. Designed for corporate professionals, athletes, and wellness enthusiasts seeking long lifecycle performance, the Ring 4 offers effortless background data synchronization via low-energy Bluetooth. Restored to Grade A condition, this hardware configuration provides elite personal analytics, superior durability, and exceptional value for modern health-conscious users.\u003c\/p\u003e\n\u003ch3\u003eKEY FEATURES\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart Sensing Technology\u003c\/strong\u003e: Next-generation recessed biometric sensors dynamically adjust to your finger for continuous, highly accurate heart rate and sleep telemetry tracking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSleek Titanium Architecture\u003c\/strong\u003e: Crafted from lightweight, durable titanium with a scratch-resistant Stealth finish designed for 24\/7 wear and 100-meter water resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended Battery Lifecycle\u003c\/strong\u003e: Delivers up to 8 days of uninterrupted operation on a single charge, ensuring seamless long-term monitoring without constant downtime.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScreenless Wellness Design\u003c\/strong\u003e: Minimalist non-intrusive form factor operates silently in the background, syncing data seamlessly to companion iOS and Android devices.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSPECIFICATIONS\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-bottom: 15px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; font-weight: bold; padding: 8px; border: 1px solid #e0e0e0;\"\u003eDevice Type\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0; color: #333;\"\u003eSmart Ring \/ Health \u0026amp; Fitness Wearable Architecture\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f5f5f5;\"\u003e\n\u003ctd style=\"width: 40%; font-weight: bold; padding: 8px; border: 1px solid #e0e0e0;\"\u003eOS Version\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0; color: #333;\"\u003eProprietary Embedded Firmware (Syncs with iOS \u0026amp; Android)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; font-weight: bold; padding: 8px; border: 1px solid #e0e0e0;\"\u003eProcessor \/ CPU\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0; color: #333;\"\u003eUltra-Low-Power Custom Biometric Microcontroller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f5f5f5;\"\u003e\n\u003ctd style=\"width: 40%; font-weight: bold; padding: 8px; border: 1px solid #e0e0e0;\"\u003eRAM Size + Type\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0; color: #333;\"\u003eEmbedded Microcontroller Cache Memory\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; font-weight: bold; padding: 8px; border: 1px solid #e0e0e0;\"\u003eStorage\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0; color: #333;\"\u003eIntegrated Onboard Flash Memory (Up to 7 Days Offline Telemetry)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f5f5f5;\"\u003e\n\u003ctd style=\"width: 40%; font-weight: bold; padding: 8px; border: 1px solid #e0e0e0;\"\u003eScreen \/ Display\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0; color: #333;\"\u003eNone (Discreet Screenless Form Factor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; font-weight: bold; padding: 8px; border: 1px solid #e0e0e0;\"\u003eTouch Screen\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0; color: #333;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f5f5f5;\"\u003e\n\u003ctd style=\"width: 40%; font-weight: bold; padding: 8px; border: 1px solid #e0e0e0;\"\u003eColor\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0; color: #333;\"\u003eStealth (Matte Titanium Finish)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; font-weight: bold; padding: 8px; border: 1px solid #e0e0e0;\"\u003eBattery\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0; color: #333;\"\u003eIntegrated Rechargeable Lithium-Polymer (Up to 8 Days Battery Lifecycle)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f5f5f5;\"\u003e\n\u003ctd style=\"width: 40%; font-weight: bold; padding: 8px; border: 1px solid #e0e0e0;\"\u003eHardware Upgradeability Rating\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0; color: #333;\"\u003eNon-Upgradeability - Factory-sealed lightweight chassis engineered for 100m water resistance.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; font-weight: bold; padding: 8px; border: 1px solid #e0e0e0;\"\u003eMemory Upgradeability\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0; color: #333;\"\u003eNon-Upgradeability - Memory architecture is permanently integrated within the core system board.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f5f5f5;\"\u003e\n\u003ctd style=\"width: 40%; font-weight: bold; padding: 8px; border: 1px solid #e0e0e0;\"\u003eStorage Upgradeability\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0; color: #333;\"\u003eNon-Upgradeability - Onboard flash storage modules are fixed and embedded.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; font-weight: bold; padding: 8px; border: 1px solid #e0e0e0;\"\u003ePhysical Ports \u0026amp; Expansion\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0; color: #333;\"\u003eNone (Utilizes magnetic inductive wireless charging dock interface)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eCONNECTIVITY\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBluetooth Wireless\u003c\/strong\u003e: Bluetooth Low Energy (BLE) framework enabling low-power telemetry links and reliable cloud synchronization with mobile companion apps.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWHAT'S INCLUDED\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOura Ring 4 (Size 5, Stealth)\u003c\/li\u003e\n\u003cli\u003eOR4 Sizing Kit\u003c\/li\u003e\n\u003cli\u003eInductive Wireless Charging Dock \u0026amp; USB Cable\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDOES NOT INCLUDE\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOriginal Box\u003c\/li\u003e\n\u003cli\u003eAC Wall Power Charging Adapter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCONDITION\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli style=\"color: #333;\"\u003eThis item has been professionally tested by trained technicians and is fully functional. The device has been professionally refurbished to an excellent condition with minimal signs of wear and a pristine finish. This is a refurbished product. It has been inspected, tested, and restored to full working condition. Minor cosmetic imperfections or light signs of wear may be present. Devices will have some variation in appearance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003cstyle\u003e\n  *{margin:0;padding:0;box-sizing:border-box;}\n  body{font-family:'Open Sans',sans-serif;background:#fff;color:#333;line-height:1.6;}\n  .container{max-width:1200px;margin:0 auto;padding:20px;}\n  .top-header{background:#000;color:#fff;padding:10px 20px;text-align:center;}\n  header.main-header{background:#4caf50;padding:20px;text-align:center;}\n  header.main-header h1{color:#fff;font-size:2.5em;margin:0;}\n  .product-description{background:#fff;border:1px solid #e0e0e0;padding:30px;margin-top:20px;box-shadow:0 2px 4px rgba(0,0,0,0.1);}\n  .product-description h3{color:#4caf50;margin-bottom:12px;margin-top:25px;font-size:1.35em;}\n  .product-description table{width:100%;border-collapse:collapse;}\n  .product-description ul{margin-left: 20px; margin-bottom: 20px;}\n  footer{background:#f1f1f1;text-align:center;padding:20px;margin-top:30px;color:#777;font-size:0.9em;}\n\u003c\/style\u003e","brand":"R3NEW","offers":[{"title":"Excellent","offer_id":51892715815145,"sku":"JZ90-54218-05^A","price":329.99,"currency_code":"USD","in_stock":true},{"title":"Good","offer_id":51892715847913,"sku":"JZ90-54218-05^B","price":309.99,"currency_code":"USD","in_stock":false},{"title":"Eco-Save","offer_id":51892715880681,"sku":"JZ90-54218-05^C","price":289.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/5433\/3161\/files\/257942.jpg?v=1789656581","url":"https:\/\/r3new.com\/products\/oura-ring-4-smart-ring-size-before-you-buy-with-or4-sizing-kit-size-5-stealth-2024-grade-a","provider":"R3NEW","version":"1.0","type":"link"}