I had a Bulova Accutron with tuning fork movement, which I lost. Some months later while napping I hear a quiet hum, and find the watch rolled up in a carpet ..

I had a Bulova Accutron with tuning fork movement, which I lost. Some months later while napping I hear a quiet hum, and find the watch rolled up in a carpet .. it was a watch with inbuilt locator function!