Specifications Hign-concerned Chemical:None Waterproof Grade:5ATM Model Number:R11 Display screen:No NFC Support:No Activity Tracked:Activity Tracker,Steps Tracker,Distance Tracker,Calorie Tracker Metrics measured:Heart Rate Monitor,Sleep Monitor,Blood Oxygen Monitor Item Weight:2.5g Certification:ce Battery Capacity(mAh):16mAh Color:Silver, Gold, Black App:ECTRI Type:Smart Ring For Men Women Description Smart Ring: Ultra Thin Body,2.2mm thickness with 2.5g lightweight weightEnsure you to wear more comfortably. Design From JingTider Tech Company,Understand your needs better. Smart Ring: Minimalist Elegance, Cutting-Edge Performance The R11 smart ring goes beyond traditional wearables with its minimalist, transparent resin inner diameter design. The smart ring uses cutting-edge technology to achieve precise data monitoring and intelligent manufacturing.Stylish, simple, and generous, both appearance and hardware perform exceptionally well. Smart Ring: 24/7 Heart Health MonitoringAs a professional heart health consultant, the R11 Smart Ring, equipped with a high-precision and high-performance heart rate sensor, accurately obtains data and monitors your heart activity 24/7. The Smart Ring intelligently analyzes the relationship between your activity and heart rate, while the app sends you reminders when your heart rate is too high. Smart Ring: Comprehensive Sleep AnalysisBy analyzing sleep efficiency, latency, timing, stages, movements, heart rate variability, our sleep analysis provides a comprehensive understanding of sleep behaviors and physical states Smart Ring: Elevate Your FitnessExperience diverse sports activities on R11 Smart Ring app, covering GPS, indoor, and outdoor. Wear the Smart Ring to effortlessly track steps, distance, calories, heart rate, and pace. Analyze map path tracking and detailed exercise data to enhance your performance and push beyond your limits. Smart Ring: All-day monitoringEmploying patented energy-saving tech, the Smart ring ensures 4-6 days of continuous monitoring without recharging. Smart Ring: Free Health Tracking AppR11 smart ring health tracker data can be viewed for free on a mobile app without any subscription fees.The device supports Android 6.0 and iOS 11.0 and above. Product Parameters: CPU:OM6626A Bluetooth Version:BLE 5.3. Battery capacity:16mAh. Stanby Time:About 7-10days. Working Time:About 5-7days. Charing time:0.5H. G Sensor:SC7A20H Heart Rate Sensor: HX3918. Magnet Cable(With SMT Protect IC). Charging Requirement:Charging 1A or less. system requirements:android6.0+ / ios11.0+. Main Function: Heart rate detection. Blood oxygen test. Remote photography. Sleep detection (Sleep time ,Sleep quality). Multiple sports modes. Step count. Calories. Synchronous data to APK/APP. Warm tips Waterproof: It is just life waterproof. It is not allowed to soak the smartring in water! (Please be careful to avoid corrosive liquids like hand sanitizer, soap enter the smart ring and cause component damage.)