Chronomaster Open Rose Gold Automatic watch Grand Seiko Powered by an automatic 1904-PS

Powered by an automatic 1904-PS MC movement with a 48-hour power reserve

this 42mm chronograph captures the understated elegance of the Portofino collection — ideal for both men and women who appreciate sophistication with a sporty edge

5 mm case houses an automatic movement with an annual calendar complication

this watch delivers precision and reliability

enhancing readability and elegance

Chronomaster Open Rose Gold Automatic watch Grand Seiko Powered by an automatic 1904-PSZenith Chronomaster Open Rose Gold Automatic Watch The Zenith Chronomaster Open (Ref. 18. 3300. 3604 69. C922) embodies the Maisons legendary mastery of high frequency chronographs, elegantly housed in a 39. 5 mm rose gold case. Its refined proportions, paired with a silver dial and the iconic open aperture that reveals the El Primero caliber 3604, celebrate Zeniths tradition of precision and innovation.