At roughly 26 seconds, this clip gives you enough room to use a full suspense build or isolate one chime. Download the MP3 to keep it available offline, then trim a shorter section if your phone limits ringtone or notification length. The hollow ringing remains clear at moderate volume, but it can cover quiet speech when pushed too high. For a quicker danger cue, keep the Metal Gear alert sound nearby. Test both through phone speakers because heavy background music can mask the clock’s quieter echoes.