Comprehensive Profile Report on Cuiogeo / Kayla (D1 Content Analysis)
| Sensor | Function | Accuracy (vs. medical‑grade) | |--------|----------|------------------------------| | PPG (photoplethysmography) | Heart‑rate 24/7 | ±3 bpm (rest), ±5 bpm (exercise) | | SpO₂ | Blood‑oxygen saturation | ±2 % | | ECG | Single‑lead electrocardiogram | FDA‑cleared (China) – comparable to Apple Watch | | Skin temperature | Basal body temp tracking | ±0.2 °C | | Accelerometer + Gyroscope | Motion detection, fall detection | Reliable for activity classification | | Barometer | Altitude changes, weather prediction | ±1 hPa | | Ambient Light | Auto‑brightness | Accurate | cuiogeo kayla d1 full
