Reference 26670ST.OO.1240ST.02 presents the Royal Oak Tourbillon Extra-Thin in a 39 mm stainless steel case, crowned by a blue dial that draws the eye with quiet confidence. A glareproofed sapphire crystal sits above the dial, while a stainless steel bezel frames the composition with characteristic geometric precision.
The selfwinding movement within powers a tourbillon complication, balancing mechanical complexity with the slender profile the Extra-Thin designation demands. A screw-locked crown and 50 m water resistance speak to the watch's practical durability, while the stainless steel bracelet with a folding clasp — finished in grey — completes an understated yet commanding wrist presence.
This example is presented as a full set, making it a compelling addition for the collector seeking one of Audemars Piguet's most technically ambitious Royal Oak expressions.