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- Marty McFly: "Didn't they give you some kind of digital watch when you were done with all that brainwashing?"
- Jennifer Parker: "The Citizen Plus watch? I won't get one of those until another five or six treatments."
- — Marty McFly and his girlfriend Jennifer Parker discussing the watch.
For the most part, the watch's functions were the same as any other. It could be set to letters as well as numbers, however, and when the combination X:11 was entered, the watch would immediately render the user blank and open to suggestion, creating a "zombie" under the control of whoever had entered the code. The idea was Edna Strickland Brown's, as her idea of a perfect Hill Valley would be a society of docile, content and easily controlled people.