{"product_id":"oura-ring-4-ceramic-smart-ring-size-before-you-buy-with-or4-sizing-kit-size-7-tide-2025-grade-a","title":"Oura Ring 4 - Ceramic Smart Ring - Size 7 - Tide - (2025)","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 Ceramic Smart Ring – Tide – Size 7\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 Ceramic brings Oura's Smart Sensing health technology to a durable zirconia ceramic exterior. It tracks more than 50 health metrics — sleep, activity, readiness, stress, heart health and women's health — with no screen and no vibrations, and up to 8 days of battery life. This listing is for the Tide color in Oura size 7.\u003c\/p\u003e\n\u003ch3\u003eKEY FEATURES\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-performance zirconia ceramic exterior in Tide\u003c\/li\u003e\n\u003cli\u003eSmart Sensing technology for accurate, continuous data day and night\u003c\/li\u003e\n\u003cli\u003eTracks 50+ health metrics: sleep, activity, readiness, stress, heart rate, HRV, blood oxygen and more\u003c\/li\u003e\n\u003cli\u003eWomen's health and cycle insights\u003c\/li\u003e\n\u003cli\u003eUp to 8 days of battery life\u003c\/li\u003e\n\u003cli\u003eWater resistant to 100 m (328 ft)\u003c\/li\u003e\n\u003cli\u003eRecessed interior sensors for a comfortable fit\u003c\/li\u003e\n\u003cli\u003eWorks with the Oura App on iOS and Android (Oura Membership required for full features)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSPECIFICATIONS\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color: #f5f5f5;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #ddd; font-weight: bold; width: 40%;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #ddd;\"\u003eOura\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #ddd; font-weight: bold; width: 40%;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #ddd;\"\u003eOura Ring 4 Ceramic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f5f5f5;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #ddd; font-weight: bold; width: 40%;\"\u003eModel Number\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #ddd;\"\u003eJZ90-57461-07\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #ddd; font-weight: bold; width: 40%;\"\u003eColor\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #ddd;\"\u003eTide\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f5f5f5;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #ddd; font-weight: bold; width: 40%;\"\u003eRing Size\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #ddd;\"\u003e7 (Oura sizing — use the Oura Ring 4 Sizing Kit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #ddd; font-weight: bold; width: 40%;\"\u003eExterior Material\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #ddd;\"\u003eZirconia ceramic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f5f5f5;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #ddd; font-weight: bold; width: 40%;\"\u003eBattery Life\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #ddd;\"\u003eUp to 8 days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #ddd; font-weight: bold; width: 40%;\"\u003eWater Resistance\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #ddd;\"\u003eUp to 100 m (328 ft)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f5f5f5;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #ddd; font-weight: bold; width: 40%;\"\u003eConnectivity\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #ddd;\"\u003eBluetooth Low Energy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #ddd; font-weight: bold; width: 40%;\"\u003eCompatibility\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #ddd;\"\u003eiOS and Android (Oura App)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f5f5f5;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #ddd; font-weight: bold; width: 40%;\"\u003eCharging\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #ddd;\"\u003eSize-specific charging dock with USB-C cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #ddd; font-weight: bold; width: 40%;\"\u003eRelease Year\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #ddd;\"\u003e2025\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\u003eBluetooth Low Energy\u003c\/li\u003e\n\u003cli\u003eOura App for iOS and Android\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWHAT'S INCLUDED\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e(1) Oura Ring 4 Ceramic – Tide – Size 7\u003c\/li\u003e\n\u003cli\u003e(1) Size-specific charging dock\u003c\/li\u003e\n\u003cli\u003e(1) USB-C charging cable\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDOES NOT INCLUDE\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePower adapter\u003c\/li\u003e\n\u003cli\u003eSizing kit\u003c\/li\u003e\n\u003cli\u003eOriginal packaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 0.9em; color: #777;\"\u003e\u003cspan style=\"font-style: italic;\"\u003eThis is a refurbished product. It has been inspected, tested, and restored to full working condition. Minor cosmetic imperfections may be present. Devices will have some variation in appearance.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/section\u003e\n\u003cfooter\u003e\n\u003cp\u003e© Copyright. All rights reserved.\u003c\/p\u003e\n\u003c\/footer\u003e\n\u003c\/div\u003e\n\u003cstyle\u003e\n* { margin: 0; padding: 0; box-sizing: border-box; }\nbody { font-family: \"Open Sans\", sans-serif; background-color: #fff; color: #333; line-height: 1.6; }\n.container { max-width: 1200px; margin: 0 auto; padding: 20px; }\n.top-header { background-color: #000; color: #fff; padding: 10px 20px; text-align: center; }\n.top-header p { font-size: 1em; margin: 0; }\nheader.main-header { background-color: #4caf50; padding: 20px; text-align: center; }\nheader.main-header h1 { color: #fff; font-size: 2.5em; margin: 0; }\n.product-description { background-color: #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 p { line-height: 1.7; margin-bottom: 18px; }\n.product-description ul { padding-left: 20px; margin-bottom: 20px; }\n.product-description li { margin-bottom: 8px; }\n.product-description table { width: 100%; border-collapse: collapse; }\nfooter { background-color: #f1f1f1; text-align: center; padding: 20px; margin-top: 30px; color: #777; font-size: 0.9em; }\n\u003c\/style\u003e","brand":"Oura","offers":[{"title":"Excellent","offer_id":67689884156137,"sku":"JZ90-57461-07^A","price":299.99,"currency_code":"USD","in_stock":true},{"title":"Good","offer_id":67689884188905,"sku":"JZ90-57461-07^B","price":299.99,"currency_code":"USD","in_stock":false},{"title":"Eco-Save","offer_id":67689884221673,"sku":"JZ90-57461-07^C","price":299.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/5433\/3161\/files\/Oura_Ring_4_-_Ceramic_Smart_Ring_-_Size_7_-_Tide_-_2025.jpg?v=1792093901","url":"https:\/\/r3new.com\/products\/oura-ring-4-ceramic-smart-ring-size-before-you-buy-with-or4-sizing-kit-size-7-tide-2025-grade-a","provider":"R3NEW","version":"1.0","type":"link"}