tontonan
0:14
earthquake alarm，before 60 seconds
0:38
Google Earthquake Alert System
0:08
Google Earthquake alert demo sound
0:45
[ENG SUB] How Earthquake Early Warning works : smartphone and radio broadcast
0:58
Twitch streamer catches moment powerful earthquake strikes Japan
0:19
Cell Broadcast iOS 15 Apple - Emergency Alerts - ETWS - Earthquake and Tsunami Alert tone
0:45
Earthquake alerts, now part of Android
3:32
Earthquake detection and alerts now on Android
