– CPU (Main Control): AB2026B3 – ROM + RAM (Internal Storage): 8Mb ROM + 96 Kb RAM – Wearing Detection: SAR (Specific Absorption Rate) – Heart Rate Sensor: HX3918 – Battery Capacity: 26mAh Laminated Process Polymer Lithium-ion Battery – Gravity Sensor: MH: DA267 – Charging Method: Magnetic charging / Charging Case – Ring Charging Time: Less than 60min – Standby / Battery Life: More than 15 days (standby) / 6 ~ 8 days (usage) – Water Proof Level: 5ATM – Weight / Thickness: Around 3.2g / 2.6MM – Working Temperature Range: 0-50℃ – System Support: Android 5.1 and above, iOS 8.2 and above, Bluetooth 5.3 – Activity Tracking: Step count, Calories, Distance – Sleep Monitoring: – Sleep Duration: Deep sleep, Light sleep, REM, Awake, Sleep Score & Sleep Proportion – Sleep Statistics: Daily, Weekly, Monthly – Sleep Quality: Sleep Quality Score, Sleep Efficiency, Sleep Duration Statistics – Sleep Proportion: Duration and percentage of deep sleep, light sleep, and REM (Rapid Eye Movement) – Sleep Heart Rate & HRV: Highest Heart Rate, Lowest Heart Rate, Average Heart Rate; Maximum HRV, Minimum HRV, Average HRV – Sleep Temperature Difference: Calculated by comparing with average temperature – Sleep Status: Sleep Activity Status and 7-Day Sleep Trend Records & Statistics – Exercise Records: Total sessions, Total calories burned, Total duration – Heart Rate Monitoring: HRV monitoring, Detection frequency: 5-60 minutes, Heart rate zone statistics – Blood Oxygen Saturation (SpO₂): Measurement, Stores last 7 readings, Detection frequency: 5-60 minutes – Heart Rate Variability (HRV): Adjustable detection frequency: 5-60 minutes – Stress Monitoring: Relaxed, Normal, Moderate, High – Female Menstrual Cycle: Requires pre-input – Appearance Parameters: – Colour: Matte Black, Matte Silver, Matte Gold