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From the look of it(black dial 15400), they don't
http://www.tourbullion.com/2013/03/comparative-review-ap-royal-oak-ref-15400st-vs-ref-15300st.html
http://www.tourbullion.com/2013/03/comparative-review-ap-royal-oak-ref-15400st-vs-ref-15300st.html