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What specific sensors in the Apple Watch 10 contribute to crash detection


The Apple Watch Series 8, Apple Watch SE (2nd generation), and Apple Watch Ultra use the following sensors to detect severe car crashes:

- Motion sensor with a high dynamic range gyroscope and high-g accelerometer[1][2]
- GPS[1][2]
- Barometer[1]
- Microphone[1][2]
- Advanced motion algorithms[1]

These sensors work together to accurately detect examples of severe crashes that can be detected, such as front-impacts, side-impacts, rear-end collisions, and rollovers[1].

When a severe car crash is detected, the Apple Watch will sound an alarm, tap the user's wrist, and display an alert on the screen[2]. If the user is unresponsive after 20 seconds, the watch will automatically initiate an emergency phone call to share the user's location with emergency services[2][3].

Citations:
[1] https://www.youtube.com/watch?v=VPHW6vZ6YDY
[2] https://support.apple.com/en-us/104959
[3] https://support.apple.com/guide/watch/manage-crash-detection-apd3a60b5576/watchos
[4] https://support.apple.com/en-us/108896
[5] https://www.apple.com/newsroom/2024/09/introducing-apple-watch-series-10/
[6] https://www.apple.com/apple-watch-series-10/specs/
[7] https://www.apple.com/eg/apple-watch-series-10/specs/
[8] https://www.apple.com/watch/why-apple-watch/