Metrics
Metrics Specifications
Last updated: December 2024
Technical specifications for CardioMood health metrics.
Heart Rate
- Range: 30-220 BPM
- Accuracy: ±3 BPM (at rest)
- Sampling: Every 5 seconds (continuous mode)
HRV (Heart Rate Variability)
- Metrics: RMSSD, SDNN, LF/HF ratio
- Accuracy: 99.2% correlation with ECG
- Window: 5-minute rolling average
SpO2
- Range: 70-100%
- Accuracy: ±2% (90-100% range)
- Measurement: On-demand or overnight
Activity
- Steps: ±5% accuracy
- Distance: Based on stride length
- Calories: Estimated from HR + activity
Sleep
- Stages: Light, Deep, REM
- Detection: Automatic
- Minimum duration: ~4 hours