The sound of the countdown.

Six versions:

1. Countdown Beep Tones 1 (0:13)

2. Countdown Beep Tones 2 (0:05)

3. Countdown Beep Tones 3 (0:03)

4. Countdown Beep Tones 4 (0:03)

5. Countdown Beep Tones 5 (0:04)

6. Countdown Beep Tones 6 (0:03)

You get an archive with wav and mp3 files.