DC Animated Universe
Signal watch

Jimmy receives the watch.

The Signal watch was a seemingly normal watch that Superman gave to Jimmy Olsen.


After freeing Jimmy Olsen from Metallo's clutches,[1] it became clear to Superman that his pal was in danger because of their ties. He gave Jimmy a special watch that could emit a hypersonic signal that only Superman could hear.[1][2]

Superman also gave a watch to Batman,[3] but it was destroyed in a battle with the Imperium before he could use it.[3] Huntress used Jimmy's watch — after capturing him — to contact Superman for help with finding the Question.[4]


Superman: The Animated Series

Justice League

Justice League Unlimited


  1. 1.0 1.1 Goodman, Robert (writer) & Fukushima, Kazumi (director) (February 20, 1999). "Superman's Pal". Superman: The Animated Series. Season 3. Episode 8 (airdate). Episode 48 (production). Kids WB!.
  2. Bader, Hilary J., Fogel, Rich (writers) & Tsuji, Shin-Ichi (director) (May 8, 1999). "A Fish Story". Superman: The Animated Series. Season 3. Episode 9 (airdate). Episode 54 (production). Kids WB!.
  3. 3.0 3.1 Fogel, Rich (writer) & Riba, Dan, Lukic, Butch (directors) (November 17, 2001). "Secret Origins, Part I". Justice League. Season 1. Episode 1 (airdate). Episode 1 (production). Cartoon Network.
  4. McDuffie, Dwayne (writer) & Riba, Dan (director) (June 25, 2005). "Question Authority". Justice League Unlimited. Season 1. Episode 22 (airdate). Episode 22 (production). Cartoon Network.