R8 Multi-Function Smart Ring Sleep Heart Rate Blood Oxygen Monitoring Finger Ring - Black / 16#

• 【Comprehensive Health Tracking】The R8 smart ring offers advanced health monitoring, including calorie tracking, step counting, distance measurement, and sleep monitoring (from 8:00 PM to 8:00 AM, automatically extending to 12:00).
• 【Multiple Fitness Modes】Track your fitness activities with dedicated modes for running, cycling, skipping, fitness workouts, hiking, yoga, golf, and dancing, providing accurate performance insights for each activity.
• 【Heart Rate & Blood Pressure Monitoring】Stay on top of your heart health with real-time heart rate monitoring and precise optical blood pressure measurement directly from the smart ring.
• 【Blood Oxygen Measurement】Keep track of your vital health data with accurate blood oxygen monitoring, ensuring you're always informed about your overall well-being.
• 【Long Battery Life】With long working time and standby time, ensuring continuous and reliable health tracking without frequent recharging.

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-compatible Transmission Strength: 0dB
• Bluetooth-compatible Central Frequency Offset: ±24KHz
• Bluetooth-compatible Receiver Signal Strength: ≥-50dB
• Bluetooth-compatible 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-compatible Version: 5.2
• Charging Voltage: 4.6 ~ 5.2V
• APP: Smart Health
• Size 20#: Outer diameter: 26.5mm, inner diameter: 19.8mm
• Size 18#: Outer diameter: 24.5mm, inner diameter: 17.8mm
• Size 16#: Outer diameter: 22mm, inner diameter: 15.4mm