• 【Elegant Enamel Craftsmanship】R19 smart ring features exquisite enamel artistry, blending timeless beauty with cutting-edge technology for a stylish health companion.

• 【Comprehensive Health Monitoring】Track heart rate, blood oxygen levels, sleep patterns, and stress levels for a complete overview of your well-being.

• 【Durable and Waterproof】With an IP68 rating, this smart ring is built to withstand daily wear and water exposure up to 50 meters.

• 【Versatile Activity Tracking】Monitor 24 different types of activities, including 19 regular exercises and 5 GPS-enabled sports modes.

• 【Smart Notifications】Receive alerts for sedentary behavior, low battery, and abnormal heart rate to stay informed about your health and device status.

Specifications:

• Material: Stainless steel case with enamel finish
• Sizes: #6 (17.8mm), #7 (19.7mm), #8 (20.5mm), #9 (21.3mm), #10 (22.3mm) inner diameter
• Thickness: 2.8mm
• Weight: 2.9g
• Chip: Zhongke AB2026B3
• Memory: 64KB RAM + 8K cache
• Max Frequency: 120MHz
• Sensors: 3-axis pedometer (SC7A20H), heart rate sensor (Tianyihe 3918)
• Bluetooth-compatible: Version 5.2
• Battery: 18mAh polymer lithium battery
• Charging: Magnetic charging, 1.5 hours charging time
• Water Resistance: IP68 (up to 50 meters)
• Operating Temperature: 0-50°C
• Compatibility: Android 5.0+ and iOS 10.0+
• App: Da Rings
• Waterproof Rating: IP68
• Heart Rate Sensor: Tianyi Hexin 3918
• Mobile App Function: GPS Supported
• Battery Type: Polymer Lithium Battery
• Battery Capacity: 18mAh
• Charging Method: Magnetic Charging
• Charging Time: 1.5H
• Theoretical Standby Time: 10-15 Days
• Normal Usage Time: 3-5 Days

Module Description:

• Activity Tracking: Distance Statistics, Calorie Burn Calculation, Daily Step Count, 7-Day Goal Achievement Tracking, Effective Activity Recording
• Sports Modes: 24 Built-in Sports Modes on APP (19 Regular Sports + 5 GPS Sports)
• Heart Rate Monitoring: APP-Triggered Heart Rate Test, 24/7 Dynamic Heart Rate Trend Tracking, Heart Rate Data Analysis, Last 7 Heart Rate Measurement Trends, Heart Rate Historical Data Storage
• Sleep Monitoring: Sleep Data Statistics, Sleep Cycle Analysis (Deep Sleep/Light Sleep/Awake), Sleep Score, Sleep Quality Analysis, Average Sleep Heart Rate Recording
• Blood Oxygen Monitoring (SpO2): APP-Triggered SpO2 Test, Last 7 SpO2 Data Records, Last 7 SpO2 Saturation Measurement Trends, SpO2 Historical Data Storage
• HRV Monitoring (Heart Rate Variability): APP-Triggered HRV Test, 7-Day HRV Data Tracking, Average HRV During Sleep, Stress Historical Data Correlation Analysis
• Stress Monitoring: APP-Triggered Stress Test, Last 7 Stress Measurement Trends, Stress Historical Data Storage
• Practical Functions：Unit Format Switching, Sedentary Reminder, Low Battery Alert, Heart Rate Warning (Abnormal Value Alert)
• Ecosystem Integration: WeChat Sports Integration, Apple Health App Synchronization
• Multilingual Support: APP Supports Multiple Language Switching