The Watch Pattern Site

5 Segments (Bars/Ball)

The seconds digit and the patterns:
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Animating patterns
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The earliest 5 bars or ball watches had the same patterns but newer watches have different patterns.

Watch With Bars

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anko

Watch With A Ball

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Q&Q (by Citizen)
Often pattern watch instructions don't show the patterns and instead show a similar model of the watch without patterns. These Q&Q watch instructions show the correct pattern for the "2" digit:

Excerpt from Q&Q MD1123 instructions