{"product_id":"r16","title":"R16 Smart Ring — Heart Rate, Blood Oxygen, HRV, Sleep \u0026 Stress Tracking | IP68+5ATM | iOS \u0026 Android","description":"\u003ch2\u003eTo Engrave Technology into Eternity.\u003c\/h2\u003e\u003cp\u003eThe R16 is a next-generation stainless steel smart ring engineered for serious health tracking. With a bold carbon fiber-pattern exterior, dual IP68+5ATM waterproofing, and advanced HRV and stress monitoring, the R16 is built for those who demand both style and substance. Precision health data. Gesture control. All-day comfort. No compromises.\u003c\/p\u003e\u003ch2\u003eStainless Steel Process — The Classic of Just-Right Forging\u003c\/h2\u003e\u003cp\u003eCrafted from premium stainless steel with a distinctive carbon fiber weave finish, the R16 combines durability with an unmistakably bold aesthetic.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eStainless steel construction — durable and comfortable\u003c\/li\u003e\n\u003cli\u003eCarbon fiber-pattern surface finish\u003c\/li\u003e\n\u003cli\u003eAvailable in: Silver, Black, Rose Gold\u003c\/li\u003e\n\u003cli\u003eSizes #7 to #13 — all sizes available\u003c\/li\u003e\n\u003cli\u003eThe covenant of the future — to engrave technology into eternity\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAdvanced Health Monitoring — All Day, All Night\u003c\/h2\u003e\u003cp\u003eThe R16 tracks your most important health metrics continuously, with timed auto-detection and real-time app reporting for comprehensive health management.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeart Rate:\u003c\/strong\u003e Timed monitoring every 30 minutes; real-time data with min\/avg\/max charts (e.g. Min 65 \/ Avg 80 \/ Max 97 bpm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlood Oxygen (SpO2):\u003c\/strong\u003e Continuous blood oxygen level tracking\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHRV (Heart Rate Variability):\u003c\/strong\u003e Advanced cardiovascular and recovery monitoring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStress Monitoring:\u003c\/strong\u003e Real-time stress level detection and trend tracking\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSleep Monitoring:\u003c\/strong\u003e Deep, light, and awake phase analysis for sleep quality improvement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep Count \u0026amp; Calories:\u003c\/strong\u003e Precise daily activity tracking (e.g. 8,500 steps \/ 1,350 Kcal \/ 6.98 km)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGesture Control:\u003c\/strong\u003e Smart gesture recognition for hands-free device interaction\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003ePrecise Calculation — Every Step\u003c\/h2\u003e\u003cp\u003eThe number of activity hours, exercise time, and activity calories are all clearly displayed. Smart reminders and incentives help you achieve your daily goals efficiently. Weekly goals are clearly visible, and exercise habits are tracked automatically.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDaily steps, calories, and distance tracking\u003c\/li\u003e\n\u003cli\u003eWeekly goal progress and exercise habit analysis\u003c\/li\u003e\n\u003cli\u003eSmart reminders to keep you on track\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAll-Day Heart Rate Monitoring App\u003c\/h2\u003e\u003cp\u003eOpen the app to view real-time heart rate data at any time period. Timed heart rate monitoring function measures every 30 minutes for more accurate data while reducing power consumption.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eReal-time heart rate charts with time-of-day breakdown\u003c\/li\u003e\n\u003cli\u003eMin \/ Average \/ Maximum heart rate per session\u003c\/li\u003e\n\u003cli\u003eDetailed data view with full history\u003c\/li\u003e\n\u003cli\u003eCompatible with iOS \u0026amp; Android\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eIP68 + 5ATM Dual Waterproofing\u003c\/h2\u003e\u003cp\u003eThe R16 carries both IP68 and 5ATM ratings — the highest level of water resistance for a smart ring. Swim, shower, sweat, and stay active without a second thought.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIP68 + 5ATM dual waterproof rating\u003c\/li\u003e\n\u003cli\u003eSuitable for swimming, showering, rain, and heavy exercise\u003c\/li\u003e\n\u003cli\u003eDustproof and corrosion-resistant\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSize Guide — Sizes #7 to #13\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eInner Diameter (mm)\u003c\/th\u003e\n\u003cth\u003eCircumference (mm)\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e#7\u003c\/td\u003e\n\u003ctd\u003e17.4mm\u003c\/td\u003e\n\u003ctd\u003e54.6mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e#8\u003c\/td\u003e\n\u003ctd\u003e18.2mm\u003c\/td\u003e\n\u003ctd\u003e57.1mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e#9\u003c\/td\u003e\n\u003ctd\u003e19mm\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\u003e19.9mm\u003c\/td\u003e\n\u003ctd\u003e62.4mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e#11\u003c\/td\u003e\n\u003ctd\u003e20.7mm\u003c\/td\u003e\n\u003ctd\u003e64.9mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e#12\u003c\/td\u003e\n\u003ctd\u003e21.5mm\u003c\/td\u003e\n\u003ctd\u003e67.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e#13\u003c\/td\u003e\n\u003ctd\u003e22.3mm\u003c\/td\u003e\n\u003ctd\u003e70.0mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cem\u003eHow to measure (4 steps): Step 1 — Take a long rope or piece of paper and circle around your finger. Step 2 — Make the rope fit tightly to your finger, pressing to avoid being too loose or too tight. Step 3 — In the case of long strings or paper, mark the junction piece. Step 4 — Lay out the long rope or the paper. Measure the length was used to circle the piece. 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