{"product_id":"r17","title":"R17 Smart Ring — Heart Rate, Blood Pressure, SpO2 \u0026 Sleep Tracking | 5ATM Waterproof | Lefun Health App | Sizes 8–12","description":"\u003ch2\u003eThe Ultimate Embodiment of High-End Technology and Exquisite Craftsmanship.\u003c\/h2\u003e\u003cp\u003eThe R17 Smart Ring by Lefun Health is a precision health wearable with a built-in color LED display, medical-grade construction, and 5ATM waterproofing rated to 50 meters. Just a touch of the side button gives you instant access to time, steps, heart rate, blood pressure, SpO2, and sleep data — all on your finger. Backed by the Lefun Health app (LefunOS), your health data is always within reach.\u003c\/p\u003e\u003ch2\u003eJust a Touch of Your Finger — Instant Response\u003c\/h2\u003e\u003cp\u003eTouch the side button to display time, steps, heart rate, and other data to remind you at all times. The built-in color LED screen shows vivid real-time metrics directly on the ring.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSide button: instant display of time, steps, heart rate, SpO2, blood pressure, and sleep\u003c\/li\u003e\n\u003cli\u003eColor LED screen on the ring face — easy to read at a glance\u003c\/li\u003e\n\u003cli\u003eHumanized arc design — medical grade inner ring, skin-friendly and anti-allergic\u003c\/li\u003e\n\u003cli\u003eMetal shell — lightweight, wear-resistant, and corrosion-resistant\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eComprehensive Health Monitoring\u003c\/h2\u003e\u003cp\u003eContinuous 24\/7 tracking of your most critical health metrics, synced to the Lefun Health app for professional reports and trend analysis.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeart Rate (HR):\u003c\/strong\u003e Continuous monitoring (e.g. 088 bpm real-time display)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlood Pressure (BP):\u003c\/strong\u003e Regular blood pressure monitoring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlood Oxygen (SpO2):\u003c\/strong\u003e Real-time SpO2 tracking (e.g. 99 SpO2)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSleep Duration:\u003c\/strong\u003e Full sleep tracking with deep\/light\/awake analysis (e.g. 7:30 sleep display)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep Count \u0026amp; Calories:\u003c\/strong\u003e Precise daily activity tracking\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFriends \u0026amp; Family Map:\u003c\/strong\u003e Share health data with loved ones via the app\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e5ATM Waterproof — Submersible to 50 Meters\u003c\/h2\u003e\u003cp\u003eRated 5ATM, the R17 is built for swimming, showering, heavy exercise, and daily water exposure. Submersible to 50 meters.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e5ATM waterproof — submersible to 50 meters\u003c\/li\u003e\n\u003cli\u003eSuitable for swimming, showering, rain, and intense exercise\u003c\/li\u003e\n\u003cli\u003eWear it anywhere, anytime\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eLong Battery Life — No More Worries\u003c\/h2\u003e\u003cp\u003eStronger performance, lower power consumption. The R17 offers up to 5–7 days in long battery mode, with 3–5 days in normal mode. The wireless charging case provides up to 13 additional charges.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong Battery Mode:\u003c\/strong\u003e 5–7 days per charge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNormal Mode:\u003c\/strong\u003e 3–5 days per charge\u003c\/li\u003e\n\u003cli\u003eCharging case: up to \u003cstrong\u003e13 full recharges\u003c\/strong\u003e when fully charged\u003c\/li\u003e\n\u003cli\u003eWireless charging case included\u003c\/li\u003e\n\u003cli\u003eType-C charging cable included\u003c\/li\u003e\n\u003cli\u003eData storage: 15 days of offline data retention\u003c\/li\u003e\n\u003cli\u003eOTA support: Bluetooth OTA firmware updates\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eLefun Health App — Happy Sports, Healthy Life\u003c\/h2\u003e\u003cp\u003eConnect to the Lefun Health app (powered by LefunOS) for a complete health dashboard, family care features, GPS mapping, and AI-powered health insights.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eApp:\u003c\/strong\u003e Lefun Health — Android 6.0+ \/ iOS 13.0+\u003c\/li\u003e\n\u003cli\u003eReal-time heart rate, SpO2, blood pressure, and sleep dashboards\u003c\/li\u003e\n\u003cli\u003eFriends and family map — share location and health data\u003c\/li\u003e\n\u003cli\u003eRecord: daily steps, calories, sleep duration\u003c\/li\u003e\n\u003cli\u003eLefun GPS integration\u003c\/li\u003e\n\u003cli\u003eAI health analysis and recommendations\u003c\/li\u003e\n\u003cli\u003eLeaderboard, health column, and knowledge articles\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e316 Stainless Steel (standard version)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardware\u003c\/td\u003e\n\u003ctd\u003ePPG sensor, 3D accelerometer, ultra-low power Bluetooth chip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRing Width\u003c\/td\u003e\n\u003ctd\u003e8.2mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRing Thickness\u003c\/td\u003e\n\u003ctd\u003e2.85mm \/ 2.8mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery\u003c\/td\u003e\n\u003ctd\u003e18mAh rechargeable Li-Polymer (varies by ring size)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Life\u003c\/td\u003e\n\u003ctd\u003e5–7 days (long battery mode) \/ 3–5 days (normal mode)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging Case\u003c\/td\u003e\n\u003ctd\u003eWireless, up to 13 recharges; Type-C cable included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Storage\u003c\/td\u003e\n\u003ctd\u003e15 days offline\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA\u003c\/td\u003e\n\u003ctd\u003eBluetooth OTA supported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWaterproof\u003c\/td\u003e\n\u003ctd\u003e5ATM (submersible to 50m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApp\u003c\/td\u003e\n\u003ctd\u003eLefun Health — Android 6.0+ \/ iOS 13.0+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColors\u003c\/td\u003e\n\u003ctd\u003e3 colors available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eRing, wireless charging case, Type-C cable, gift box, instruction manual\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eSize Guide — Sizes #8 to #12\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eDiameter (mm)\u003c\/th\u003e\n\u003cth\u003ePerimeter (mm)\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e#8\u003c\/td\u003e\n\u003ctd\u003e17.7mm\u003c\/td\u003e\n\u003ctd\u003e55.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e#9\u003c\/td\u003e\n\u003ctd\u003e18.9mm\u003c\/td\u003e\n\u003ctd\u003e59.6mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e#10\u003c\/td\u003e\n\u003ctd\u003e20.4mm\u003c\/td\u003e\n\u003ctd\u003e64mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e#11\u003c\/td\u003e\n\u003ctd\u003e21mm\u003c\/td\u003e\n\u003ctd\u003e65.9mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e#12\u003c\/td\u003e\n\u003ctd\u003e21.6mm\u003c\/td\u003e\n\u003ctd\u003e67.8mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cem\u003eHow to measure: Use a non-elastic cord, wrap around your finger, pull up snug, mark the length, then lay flat and measure against a ruler.\u003c\/em\u003e\u003c\/p\u003e","brand":"Meprian","offers":[{"title":"Gold \/ US 8#","offer_id":52195281666369,"sku":null,"price":31.5,"currency_code":"USD","in_stock":true},{"title":"Gold \/ US 9#","offer_id":52195281699137,"sku":null,"price":31.5,"currency_code":"USD","in_stock":true},{"title":"Gold \/ US 10#","offer_id":52195281731905,"sku":null,"price":31.5,"currency_code":"USD","in_stock":true},{"title":"Gold \/ US 11#","offer_id":52195281764673,"sku":null,"price":31.5,"currency_code":"USD","in_stock":true},{"title":"Gold \/ US 12#","offer_id":52195281797441,"sku":null,"price":31.5,"currency_code":"USD","in_stock":true},{"title":"Gold \/ US 13#","offer_id":52195281830209,"sku":null,"price":31.5,"currency_code":"USD","in_stock":true},{"title":"Gold \/ US 7#","offer_id":52195281928513,"sku":null,"price":31.5,"currency_code":"USD","in_stock":true},{"title":"Silver \/ US 8#","offer_id":52195281961281,"sku":null,"price":31.5,"currency_code":"USD","in_stock":true},{"title":"Silver \/ US 9#","offer_id":52195281994049,"sku":null,"price":31.5,"currency_code":"USD","in_stock":true},{"title":"Silver \/ US 10#","offer_id":52195282026817,"sku":null,"price":31.5,"currency_code":"USD","in_stock":true},{"title":"Silver \/ US 11#","offer_id":52195282059585,"sku":null,"price":31.5,"currency_code":"USD","in_stock":true},{"title":"Silver \/ US 12#","offer_id":52195282092353,"sku":null,"price":31.5,"currency_code":"USD","in_stock":true},{"title":"Silver \/ US 13#","offer_id":52195282125121,"sku":null,"price":31.5,"currency_code":"USD","in_stock":true},{"title":"Silver \/ US 7#","offer_id":52195282223425,"sku":null,"price":31.5,"currency_code":"USD","in_stock":true},{"title":"Black \/ US 8#","offer_id":52195282256193,"sku":null,"price":31.5,"currency_code":"USD","in_stock":true},{"title":"Black \/ US 9#","offer_id":52195282288961,"sku":null,"price":31.5,"currency_code":"USD","in_stock":true},{"title":"Black \/ US 10#","offer_id":52195282321729,"sku":null,"price":31.5,"currency_code":"USD","in_stock":true},{"title":"Black \/ US 11#","offer_id":52195282354497,"sku":null,"price":31.5,"currency_code":"USD","in_stock":true},{"title":"Black \/ US 12#","offer_id":52195282387265,"sku":null,"price":31.5,"currency_code":"USD","in_stock":true},{"title":"Black \/ US 13#","offer_id":52195282420033,"sku":null,"price":31.5,"currency_code":"USD","in_stock":true},{"title":"Black \/ US 7#","offer_id":52195282518337,"sku":null,"price":31.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1001\/7082\/6049\/files\/R17Smartring_5.png?v=1789032645","url":"https:\/\/meprian.com\/products\/r17","provider":"Meprian","version":"1.0","type":"link"}