Most Berlin U-Bahn trains do RED ALERT just before closing the doors. It sounds just like Star Trek.
(Source: https://www.youtube.com/)
Tag: alert
The modest, un-annoying beep of the MUJI timer.
Most Berlin U-Bahn trains do RED ALERT just before closing the doors. It sounds just like Star Trek.
The modest, un-annoying beep of the MUJI timer.