Superman gave James the watch just in case he ever got in trouble, so the latter would be able to contact him. James is also to use the watch to communicate with Kara when she is in the field.
- "Fight or Flight"
- "Red Faced"
- "Strange Visitor From Another Planet"
- "Falling" (mentioned)
Behind the scenes
- Jimmy Olsen's signal watch was first featured in Action Comics #238 (March, 1958) and was created by Otto Binder and Wayne Boring.