Ballon Bleu de Cartier watch Grand Seiko and a dual-curved sapphire crystal

and a dual-curved sapphire crystal with anti-reflective coating on the inner surface for clear visibility

Grand Seiko believes that the essential qualities of a wristwatch are accuracy

a true testament to the ingenuity of our watchmakers

This classic GMT watch combines the style that has long captivated watch lovers with an evolved Caliber 9S66 movement

dark grey sunray-brushed dial

Ballon Bleu de Cartier watch Grand Seiko and a dual-curved sapphire crystalBallon Bleu de Cartier watch, 40 mm, Manufacture mechanical movement with automatic winding, caliber 1847 MC. Steel case, fluted crown set with a synthetic cabochon shaped spinel, silvered guilloch dial, blued steel sword shaped hands, sapphire crystal, interchangeable black alligator leather strap, steel interchangeable deployant buckle, calendar aperture at 3 o'clock. Thickness: 12. 4 mm. Water resistant up to 3 bar (approx. 30 meters 100 feet).