The Apple Watch is a brand of smartwatch products developed and marketed by Apple. It incorporates fitness tracking, health-oriented capabilities, and wireless telecommunication, and integrates with watchOS and other Apple products and services. The Apple Watch was released in April 2015, and quickly became the world's best-selling wearable device: 4.2 million were sold in the second quarter of fiscal 2015, and more than 115 million people were estimated to use an Apple Watch as of December 2022.
https://en.wikipedia.org/wiki/Apple_Watch