From Grand Seiko, the 9F Quartz Model of the Heritage Collection, which has been developed in pursuit of perfection, has been upgraded with the new 9F85 caliber. Caliber 9F85 has a time difference adjustment function that allows the hour hand to be adjusted without stopping the seconds hand and thus preserving its high precision when the wearer changes time zones. The case utilizes perfect mirror-finished surfaces created using Zaratsu polishing, and combines beautiful and shining mirror-finished and hairline-finished surfaces for three-dimensionality. Enlarged glass size makes the bezel thinner, and that gives a sharp and refined impression, and the dial looks more spacious.<br /><br /><strong>Exterior:</strong><li>Case Material: Stainless steel</li><li>Glass Material: Sapphire crystal</li><li>Glass Coating: Anti-reflective coating on inner surface</li><li>Case size: Diameter 40mm × Thickness 10.6mm</li><li>Clasp type: Three-fold clasp with push button release</li><br /><strong>Movement:</strong><li>Caliber No: 9F85</li><li>Movement Type: Quartz</li><li>Accuracy: ±10 seconds per year</li><br /><strong>Features:</strong><li>Water resistance: 10 bar</li><li>Magnetic resistance: Equipped</li><li>Weight: 148.0 g</li><li>Calendar-linked time difference adjustment function</li><li>Case back with lion emblem</li><li>Date display</li><li>Screw case back</li>Grand Seiko Style #: SBGP013