Hamilton Jazzmaster Open Heart Auto 40mm Watch Calendar covering approximately 400 hectares near

covering approximately 400 hectares near the Grand Seiko studio in Shizukuishi

Grand Seiko is suffused with this time-honoured aesthetic

Engineered for accuracy

bringing the wearer closer than ever to the serene and eternal nature of the passage of time

Hamilton Jazzmaster Open Heart Auto 40mm Watch Calendar covering approximately 400 hectares nearA vibrant smoked dial draws the eye inward to the precision cutouts of the Jazzmaster Open Heart. Offering a captivating glimpse at the movement underneath, its contemporary style is both unique and versatile. A three hand movement with or without a date function and boasting a superior power reserve of 80 hours, the H 10 appears with intricate contrasting snail and pearled patterns for the American Classic models it drives and streamlined surfaces