"Take a breath and track your health—monitor your blood oxygen levels with ease, right from your wrist."

How Smartwatches Measure Blood Oxygen (SpO2)

Smartwatches use Pulse Oximetry to measure blood oxygen levels (SpO2), indicating how much oxygen your blood carries compared to its full capacity. Here’s how it works:

1. Optical Sensors (PPG Technology)

• How It Works:
  Light sensors on the smartwatch shine red and infrared light onto your skin. The light penetrates blood vessels, and the amount of light absorbed is used to calculate oxygen levels. Oxygen-rich blood absorbs more infrared light, while oxygen-depleted blood absorbs more red light.

• Accuracy:
  Readings are approximate but reliable for general health monitoring.

2. Why Measure Blood Oxygen?

Monitoring SpO2 is essential for:

• Detecting potential issues like sleep apnea or hypoxia.
• Tracking fitness and recovery, especially during exercise or high altitudes.
• Understanding how your body adapts to physical stress.

Using the Feature: Simply wear the watch snugly, remain still, and follow the instructions on your smartwatch app to get an accurate reading.

Note: Always consult a doctor for medical concerns, as smartwatch SpO2 readings are for wellness, not diagnosis.