Audemars Piguet Selfwinding

Audemars Piguet's Royal Oak Selfwinding 15553BA.OO.1356BA.04 measures 37 mm in yellow gold, with a case thickness of 9.3 mm. The green dial is malachite, giving the surface texture and depth beneath the sapphire crystal. Inside is the self-winding calibre 5909, which drives hours, minutes and central seconds. This is a women's watch built on the Royal Oak's integrated bracelet architecture, here executed entirely in yellow gold. The bracelet is fitted with a three-blade folding clasp. Water resistance sits at 50 metres, respectable for a dress-leaning sports watch rather than a tool piece.