What category of wearable device, such as the Apple Watch or Fitbit Sense, tells time and tracks health metrics?
Show answer
Smartwatch
Modern smartwatches use photoplethysmography (PPG), which involves shining green LED lights onto the skin to detect changes in blood volume and calculate heart rate. They have evolved from simple notification centers into sophisticated medical-grade diagnostic tools.
Also asked as:
- What type of wearable technology includes devices like the Fitbit Sense and Apple Watch?