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Royal Oak
Double Balance Wheel Openworked

Ref. 15407ST.OO.1220ST.01
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Standup image of the watch Double Balance Wheel Openworked
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The Royal Oak Double Balance wheel Openworked tackles these stabilising issues by fixing a second balance wheel and balance-spring assembly on the same axis. The new patented geometry involves a very complex manufacturing procedure, but the payoff is huge: greatly improved precision and stability.

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