40 mm, yellow gold case. Behold the timeless elegance of the Automatic 4030, powered by the renowned Zenith movement. Encased in opulence, the 18k yellow gold structure (40mm) features a Tachymeter bezel and a scratch-resistant sapphire crystal, ensuring both style and durability. The Champagne dial is adorned with luminous hands and Tritium lume plots, combining classic aesthetics with practical visibility. Embrace luxury and comfort with the Rolex brown leather strap, secured by the 18k yellow gold Fliplock clasp.