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GT_Aventus
·Hello, I recently bought a Speedmaster 3511.50 date and was wondering if it has a 17 or 25 jewel movement. I see contradicting specifications online for this caliber 1155 movement. Either way, how much of a difference does having 17 or 25 jewels have on timekeeping and service intervals? I was planning on using the chronograph function a lot, but now I feel like holding back if it's 17 jewels. Any info helps, thank you.
