{"product_id":"r8-nfc-smart-ring-hrv-health-tracker","title":"R8 NFC Smart Ring – HRV, Heart Rate, Blood Oxygen \u0026 Sleep Tracker | NFC Access Control | IP68 | Magnetic Charging","description":"\u003ch2\u003eYour Key, Your Health Monitor — On One Finger\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eR8 NFC Smart Ring\u003c\/strong\u003e redefines what a ring can do. Forged in premium ceramic with a sleek matte black finish, it replaces your door card, elevator card, parking card, and community access card — all while silently monitoring your health around the clock. Ultra-thin at just 7mm, you’ll forget you’re wearing it. Until you need it.\u003c\/p\u003e\u003ch3\u003e6 Core Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNFC Smart Access Control\u003c\/strong\u003e — Replace door locks, elevator cards, corridor access, and parking cards with a tap of your finger\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7mm Ultra-Thin Technology\u003c\/strong\u003e — Engineered for all-day comfort without sacrificing performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart Sports Monitoring\u003c\/strong\u003e — Automatic recognition of running, cycling, swimming \u0026amp; more with real-time stats\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReal-Time Health Monitoring\u003c\/strong\u003e — HRV, heart rate, blood oxygen, blood pressure, and body temperature tracked 24\/7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSleep Information\u003c\/strong\u003e — Deep, light, and REM stage analysis to help you wake up refreshed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote Control Photography\u003c\/strong\u003e — Trigger your phone camera hands-free via BLE\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNFC Smart Access Control\u003c\/h3\u003e\u003cp\u003eThe R8 uses built-in NFC technology to replace the cards you carry every day. A simple tap grants access to:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e🔑 \u003cstrong\u003eHousehold door locks\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e🔢 \u003cstrong\u003eElevator access\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e🏗️ \u003cstrong\u003eCorridor \u0026amp; community access control\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e🚗 \u003cstrong\u003eParking barriers\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eCompatible with standard NFC card systems. Please verify compatibility with your specific door\/elevator system before purchase.\u003c\/p\u003e\u003ch3\u003eReal-Time Health Monitoring\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHRV (Heart Rate Variability)\u003c\/strong\u003e — Measure stress and recovery status\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeart Rate\u003c\/strong\u003e — Continuous monitoring with alerts for abnormal readings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlood Oxygen (SpO2)\u003c\/strong\u003e — Instant saturation readings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlood Pressure\u003c\/strong\u003e — Cardiovascular health tracking\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Temperature\u003c\/strong\u003e — Detect early signs of illness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSleep Monitoring\u003c\/strong\u003e — Full sleep cycle breakdown via the Smart Health app\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain Control Chip\u003c\/td\u003e\n\u003ctd\u003eAC6323\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePPG Chip\u003c\/td\u003e\n\u003ctd\u003eGH3018\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Capacity\u003c\/td\u003e\n\u003ctd\u003e20mAh (3–5 days usage)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWaterproof Rating\u003c\/td\u003e\n\u003ctd\u003eIP68\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eFrom 3.8g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRing Width\u003c\/td\u003e\n\u003ctd\u003e7mm Ultra-Thin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging\u003c\/td\u003e\n\u003ctd\u003eMagnetic Charging\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNFC\u003c\/td\u003e\n\u003ctd\u003eYes — Smart Access Control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApp\u003c\/td\u003e\n\u003ctd\u003eSmart Health (iOS \u0026amp; Android)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eHow to Find Your Size\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003eWrap a thin, non-stretchy strip of paper around your finger and mark where it overlaps.\u003c\/li\u003e\n\u003cli\u003eStraighten and measure the length in millimeters.\u003c\/li\u003e\n\u003cli\u003eMatch your measurement to the perimeter in our size chart to find your perfect fit.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003e\u003cem\u003eTip: Measure at the end of the day when fingers are slightly larger for the best fit.\u003c\/em\u003e\u003c\/p\u003e","brand":"Meprian","offers":[{"title":"Black \/ US 7#","offer_id":52164968939841,"sku":null,"price":50.5,"currency_code":"USD","in_stock":true},{"title":"Black \/ US 8#","offer_id":52164968972609,"sku":null,"price":50.5,"currency_code":"USD","in_stock":true},{"title":"Black \/ US 9#","offer_id":52164969005377,"sku":null,"price":50.5,"currency_code":"USD","in_stock":true},{"title":"Black \/ US 10#","offer_id":52164969038145,"sku":null,"price":50.5,"currency_code":"USD","in_stock":true},{"title":"Black \/ US 11#","offer_id":52164969070913,"sku":null,"price":50.5,"currency_code":"USD","in_stock":true},{"title":"Black \/ US 12#","offer_id":52164969103681,"sku":null,"price":50.5,"currency_code":"USD","in_stock":true},{"title":"Black \/ US 13#","offer_id":52164998463809,"sku":null,"price":50.5,"currency_code":"USD","in_stock":true},{"title":"Black \/ US 14#","offer_id":52164998496577,"sku":null,"price":50.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1001\/7082\/6049\/files\/R8Smartring_9.jpg?v=1788427292","url":"https:\/\/meprian.com\/products\/r8-nfc-smart-ring-hrv-health-tracker","provider":"Meprian","version":"1.0","type":"link"}