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Some improvements trickled down from the Caliber 5133 movement in AP's Royal Oak Selfwinding Perpetual Calendar Ultra-Thin RD#2. That watch also had all perpetual calendar functions in one layer of the movement, with an end-of-month cam similarly integrated with the date wheel, and the month cam is combined with the month wheel. The link crown link adjustments link are in a second layer, which keeps the whole thing thin.

Both the 9R65 Spring Drive and Hi-Beat 9S85 caliber are represented in the lineup the 9R65 movement link is paired with the titanium models meant to link evoke spring and winter link and the 9S85 caliber is found inside the stainless steel cased watches styled after fall and summer.