The Audemars Piguet Royal Oak Selfwinding "50ᵀᴴ Anniversary" 34mm (ref. 77450SR.OO.1361SR.01) is an automatic sport watch, with a 34mm stainless steel case, powered by the 5800 movement and a 50-hour power reserve. Water resistance is rated to 50m, under a sapphire crystal.
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