PurePulse - Photoplethysmography

Detects blood flow to determine heart rate and cardio
fitness.

Accelerometers, gyroscopes and
orientation

Detects motion to determine the type and intensity of
exercise. Also used for sleep analysis.

Barometer - Air pressure measurement

Measures changes in air pressure associated with
changes in altitude.

Blood oxygen saturation (SpO2) - Red and infrared lights

Measure the concentration of oxygen in the blood.

EDA Sensor - Infrared lights

Measures changes in sweat levels of the skin to
determine stress levels.

Heart rate data collected

- Resting and sleeping heartrates

- Cardio fitness level

- Heart rate zones