The R8 smart ring offers a wealth of health and fitness monitoring features, making it an ideal companion for those who want to stay on top of their well-being. Its long battery life ensures continuous tracking, and its accuracy in measurements provides valuable health insights. •Advanced Health Monitoring: The R8 smart ring is equipped with comprehensive health monitoring features, including calorie tracking, step counting, distance measurement, and sleep monitoring from 8:00 PM to 8:00 AM (automatically extended to 12:00) •Multi-Sport Modes: Enjoy a range of fitness activities with dedicated modes for running, cycling, skipping, fitness workouts, hiking, yoga, golf, and dancing, allowing you to track your performance accurately •Heart Rate and Blood Pressure Monitoring: Stay informed about your heart health with real-time heart rate monitoring and precise optical blood pressure measurement •Blood Oxygen Measurement: The smart ring supports accurate blood oxygen measurement, ensuring you have access to vital health data •Long Battery Life: With up to 7 days of working time, 60 days of standby time, and 180 days of shutdown time, the R8 offers extended battery performance for uninterrupted health monitoring Specifications: •Main Control: NORDIC NRF52832-CIAA •Charging Chip: SY8602 •Accelerometer: QMA6100P •Battery: Charging Case 400mAh, Ring 23mAh •Photoelectric PPG Analog Front End (PPG AFE): HX3605 •Motion Measurement: Calories, Steps, Distance •Sleep Monitoring: 20:00 ~ 8:00 (Automatically extends to 12:00) •Multiple Sports Modes: Running, Cycling, Jump Rope, Fitness, Mountaineering, Yoga, Golf, Dance •Heart Rate Measurement: Supported •Blood Pressure Measurement: Supported via photoplethysmography (PPG) •Heart Rate Alert: Not supported •Blood Oxygen Measurement: Precisely supported •Blood Glucose Measurement: Not supported (electrochemical measurement) •Temperature Alert: Not supported •Automatic Health Monitoring: Supported •Activity Information Data Storage: Supported •Historical Data Storage Duration: 7 days rolling •Low Battery Shutdown: Supported •OTA Upgrade: Supported •Automatic Recovery Function: Supported •Self-Check Function: Supported •Fast/Slow Broadcast Switching Function: Supported •Zero-Clearing of Relevant Data at Midnight: Supported •Step Accuracy: ≥95% •Sleep Detection Error: ≤1 hour •Resting Heart Rate Accuracy: ±5bpm •Dynamic Heart Rate Accuracy: ±20bpm •Blood Pressure Accuracy: ±10mmHg (average difference) •Blood Oxygen Accuracy: ±3% •ECG Signal: Suitable for dry skin, no significant noise in waveform quality •Working Battery Life: 7 days •Standby Battery Life: 60 days •Shutdown Battery Life: 180 days •Shutdown Power Consumption: ≤10uA •Standby Power Consumption: ≤50uA •Battery Level Display Error: ≤3% •Charging Duration (hours): 1± 0.5h •Bluetooth Transmission Strength: 0dB •Bluetooth Central Frequency Offset: ±24KHz •Bluetooth Receiver Signal Strength: ≥-50dB •Bluetooth Wireless Sensitivity: ≥-90dB •Button Life: ≥100,000 times •Average No-Reset Time: ≥200 hours •Average Failure-Free Time (MTBF): ≥1 year •Speaker Output Effect: No noise, no distortion •Operating Temperature: 0 ~ 45℃ •Storage Temperature: -10 ~ 55℃ •Operating Humidity: 5% ~ 95% (non-condensing) •APP System Requirements: Android: 6.0 and above; iOS: 11.0 and above •Bluetooth Version: 5.2 •Charging Voltage: 4.6 ~ 5.2V •APP: Smart Health Package included: •1 x Smart Ring •1 x Charging Case •1 x English User Manual •1 x Lanyard •1 x Charging Cable •Other items not included