Learn About Smartwatch Sensors

What is it?

Smartwatches come with many sensors that can help you keep an eye on your health. It is important to note that all these sensors provide estimated measurements, and are not 100% accurate. The following are the main sensors with their capabilities:

• Optical Heart Sensor

  It can measure your heart rate.

• Electrical Heart Sensor

  It can take ECG (Electrocardiogram) tests.

• Blood Oxygen Sensor

  It measures your blood oxygen levels.

• Altimeter

  It detects how much you are climbing.

• Accelerometer

  It can measure movement and direction.

• Gyroscope

  It helps in measuring movement more accurately.

How does it work?

Sensors work by doing the following (over simplified) steps:

1. Take measurements
2. Send data to your device

Look for

• Accuracy Level

  Check the accuracy levels provided by each sensor