Vacheron Constantin, the Four Seas series, model: 16550 / 423A-8881, ladies' wristwatch, 25mm in diameter, quartz movement, full steel case, original diamond-encrusted bezel, mother-of-pearl diamond-engraved dial, classic Four Seas steel band folding clasp. VC has discontinued its steel diamond women's watch, which is understated yet luxurious. It is practical and durable for commuting and has an outstanding appearance.