https://techcrunch.com/2022/09/07/apple-watch-series-8-has-new-sensors-that-can-detect-when-youre-in-a-car-crash/

The new Apple Watch Series 8 features an improved gyroscope and accelerometer that can detect if you’re in a car crash. That was one of the many announcements out of Apple’s event this morning in Cupertino, where the company showcased its latest technical and service innovations.

Car crash detection on the Series 8 — which was rumored late last year — is enabled by a new three-axis gyroscope and “high g-force” accelerometer that samples data four times faster than the previous generation (and up to 256 gs of force). Leveraging an algorithm running on the device, along with the barometer, the Series 8 can detect crashes in most types of vehicles and automatically notify emergency contacts and services, Apple said.