{"product_id":"seiko-sbgp013-elegant-quartz-watch-stainless-steel-case-sapphire-crystal-100m-water-resistant","title":"SEIKO SBGP013 Elegant Quartz Watch Stainless Steel Case Sapphire Crystal 100m Water Resistant","description":"```html\n\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"font-weight:800;padding:8px;background:#d9d9d9;\"\u003eProduct Highlights\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"padding:8px;\"\u003e9F quartz model with a time difference correction function for the hour hand alone\nEquipped with the new quartz caliber \"9F85,\" which has a time difference correction function for the hour hand alone. By moving the hour hand independently without stopping the watch, you can correct the time difference without losing the high accuracy of the quartz watch. The long hands, which give a sharp impression, and the intricately chamfered three-dimensional indexes enhance visibility. The calm navy blue dial, combined with the standard case design and the 40mm size, makes it suitable for any occasion. A member of Grand Seiko's new heritage collection, it exudes a dignified presence while being slim.\nGrand Seiko\nManufacture\nGrand Seiko is a true manufacture that handles everything in-house, from movement development, design, manufacturing, assembly, adjustment, inspection, to shipping. In an environment where each component can be researched and developed from materials, cutting-edge technology is fused with the highest level of craftsmanship. The \"Grand Seiko Studio Shizukuishi,\" overlooking the majestic Iwate Mountain. The \"Shinshu Time Artisan Workshop,\" surrounded by the mountains and lakes of Shinshu. Three movements are created in these two workshops nurtured by rich nature.\nThe Spirit of Takumi\nThe attitude of Grand Seiko's artisans who endlessly pursue the essence of time. This is akin to the way of \"do\" seen in traditional Japanese martial arts, tea ceremony, and flower arrangement. By honing their skills and deepening their spirituality, this path becomes sharper and opens up new realms. To embody the ever-changing time within the watch, they strive for high precision, visibility, and the beauty of form. Creating a true ideal watch that shines eternally across generations. The challenge of the artisans knows no end.\nLight and Shadow\nThe Japanese delicately perceive, savor, and cherish the countless expressions created by light and shadow as time flows. The design is characterized by sharp, distortion-free flat surfaces and straight lines. The mirror finish is meticulously polished with the exceptional skills of artisans. The multi-faceted cut indexes and thick hands are designed to create beautiful expressions even as light changes with time and place, shining brilliantly while maintaining high visibility.\nSpecifications\nExterior: Stainless Steel\nGlass Material: Sapphire\nCoating: Anti-reflective coating on the inner surface\nLumiBrite: None\nCase Size: Width 40mm × Thickness 10.6mm\nWrist Circumference Length (Maximum): 203mm\nClasp: One-push three-fold type\nDrive Method: Battery-operated quartz\nAccuracy: Annual difference ±10 seconds\nWater Resistance: Daily life water-resistant (10 ATM)\nMagnetic Resistance: Yes\nWeight: 148.0 g\nOthers:\n・Calendar (date) function included\n・Case back with lion emblem\n・Screw back (due to manufacturing reasons, there may be individual differences in the orientation of the case back)\n・Calendar-linked time difference correction function\nGrand Seiko continues to pursue the essence of watches as a timepiece to walk through life with.\n■ 9F Quartz\n【The ultimate quartz movement equipped with numerous new features that transcend conventional wisdom in pursuit of the essence of wristwatches】\nTo accurately mark time, to be easy to read, and to be a companion for life. The 9F quartz is the result of questioning the essence of wristwatches that seem so obvious.\n・Instantly switching instant date calendar\n・Power source for moving thick and dignified hands like a mechanical watch\n・Improved accuracy of the second hand indicating the scale correctly\n・High airtight structure to enhance oil retention\nIncorporating numerous new features that were unthinkable in conventional quartz, the 9F quartz overturns the previous notion of \"thin and light quartz\" and boasts world-class performance.\n【The birthplace of quartz watches and Spring Drive, Shinshu Time Artisan Workshop】\nGrand Seiko is a true \"manufacture\" that handles everything in-house from movement design to development, manufacturing, assembly, adjustment, inspection, and shipping, creating watches that fuse cutting-edge technology with the highest level of craftsmanship. The \"Shinshu Time Artisan Workshop,\" responsible for Grand Seiko's quartz watches and Spring Drive, is located in Shiojiri, Nagano Prefecture. In just five years since the introduction of Grand Seiko's quartz, they completed the world's highest-level quartz that transcended previous quartz norms while also creating the dream mechanism Spring Drive, developed over more than 20 years, showcasing innovative ideas and manufacturing techniques.\n【Instantly switching \"instant date calendar\"】\nThe 9F quartz employs an \"instant date cam\" that works in conjunction with the \"date wheel,\" and an \"instant date lever\" that operates with that movement. As the \"date wheel\" rotates, it gradually bends the spring of the \"instant date lever\" to store energy, and when the cam reaches a certain position, the spring is instantaneously released, causing the date display to switch instantly. While instant date calendars have been seen in mechanical watches with strong torque, Grand Seiko is the first to implement this in a quartz watch.\nThe task of aligning this switching moment with midnight is done by skilled assembly artisans, and it is set as a standard to ensure that the calendar does not switch before midnight, within a range of 5 minutes before midnight.\n【\"Regulator switch\" for precision adjustment even in quartz】\nWhile mechanical watches have mechanisms for fine-tuning accuracy, generally, quartz watches cannot be finely adjusted even when the case back is opened. However, the 9F quartz has a \"regulator switch\" that allows for precision adjustment. After using it for several years, when tendencies of gaining or losing time become apparent, this switch can be used to correct the accuracy. By understanding the \"quirks\" of the watch over many years of use and making adjustments to suit its individuality, it becomes a watch that can accompany you for a longer time. However, the quartz crystal oscillator used in the 9F quartz is of the highest quality, having undergone special testing and aging, so the need for the \"regulator switch\" is rare. This is one of Grand Seiko's thoughtful considerations.\n【Thick and heavy hands accurately marking time with \"twin pulse control motor\"】\nIn quartz watches, which have weaker torque than mechanical watches, it is not possible to move thick and heavy hands, so generally, thin hour and minute hands are used. However, Grand Seiko's quartz models are equipped with thick and dignified hands, similar to those found in the first Grand Seiko. To accurately move such hands, the 9F quartz is equipped with a \"twin pulse control motor\" that can move heavy hands while saving energy. While the second hand of a normal quartz moves in one step per second, the 9F quartz moves in two steps per second. This is because it efficiently sends two signals per second to achieve high driving power and energy savings to turn thicker hands. By increasing the signals, the axial torque from the rotor is increased, allowing even thick hands to be moved. Of course, this two-step movement is not perceivable to the naked eye and appears as a single step, just like conventional quartz watches. Furthermore, unlike other quartz watches, it employs a unique method of ultra-low power temperature compensation. Typically, quartz watches do not have temperature compensation programs for monthly accuracy. Additionally, if a temperature compensation program is included, it requires significant power for control, which shortens battery life. To address this issue, the 9F quartz adopts ultra-low power temperature compensation. By driving the unique \"twin pulse control system\" while reducing the power consumption of the IC, it achieves about twice the driving power of conventional systems and a battery life of approximately three years, longer than that of typical quartz watches.\n【\"Crystal oscillator\" aged for three months】\nThe reason the 9F quartz can achieve an annual difference of ±10 seconds is that it uses only crystal oscillators that have been selected for stable performance after three months of aging. The crystal oscillator vibrates 32,768 times per second, and the accuracy of quartz watches is determined by whether this vibration frequency can be maintained. There are individual differences in crystal oscillators, and some may fail to maintain a stable frequency due to environmental changes or aging. Additionally, even if a crystal oscillator initially has high accuracy, its frequency may change over the years of use, leading to gains or losses. Focusing on this point, Grand Seiko was the first in the world to adopt an \"aging\" method that ensures the frequency stabilizes before installation. The aging process, which involves applying a constant voltage and artificially providing voltage while selecting, lasts for three months. Only crystal oscillators that pass this standard are installed in the 9F quartz.\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"font-weight:800;padding:8px;background:#d9d9d9;\"\u003eSpecifications\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #5d5d5d;font-weight:600;padding:6px 10px;width:35%;\"\u003eDrive Method\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #ccc;padding:6px 10px;\"\u003eBattery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #5d5d5d;font-weight:600;padding:6px 10px;width:35%;\"\u003eRadio Automatic Correction Function\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #ccc;padding:6px 10px;\"\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #5d5d5d;font-weight:600;padding:6px 10px;width:35%;\"\u003eDisplay Method\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #ccc;padding:6px 10px;\"\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #5d5d5d;font-weight:600;padding:6px 10px;width:35%;\"\u003eCase\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #ccc;padding:6px 10px;\"\u003eSS bezel, SS body, SS case back\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #5d5d5d;font-weight:600;padding:6px 10px;width:35%;\"\u003eGlass\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #ccc;padding:6px 10px;\"\u003eSapphire Glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #5d5d5d;font-weight:600;padding:6px 10px;width:35%;\"\u003eBand Material\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #ccc;padding:6px 10px;\"\u003eMetal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #5d5d5d;font-weight:600;padding:6px 10px;width:35%;\"\u003eBand (Adjustable)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #ccc;padding:6px 10px;\"\u003eScrew type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #5d5d5d;font-weight:600;padding:6px 10px;width:35%;\"\u003eAccuracy\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #ccc;padding:6px 10px;\"\u003eAnnual difference ±10 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #5d5d5d;font-weight:600;padding:6px 10px;width:35%;\"\u003eSpecification 1\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #ccc;padding:6px 10px;\"\u003eCase back with lion emblem, screw back\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #5d5d5d;font-weight:600;padding:6px 10px;width:35%;\"\u003eSpecification 2\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #ccc;padding:6px 10px;\"\u003eCalendar-linked time difference correction function, calendar (date) function included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #5d5d5d;font-weight:600;padding:6px 10px;width:35%;\"\u003eList Price\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #ccc;padding:6px 10px;\"\u003e¥396,000 JPY\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n```","brand":"SEIKO","offers":[{"title":"Default Title","offer_id":47586196914260,"sku":"SBGP013","price":383905.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0284\/7401\/5828\/files\/SBGP013_1.jpg?v=1787850622","url":"https:\/\/www.ippojapanwatch.com\/products\/seiko-sbgp013-elegant-quartz-watch-stainless-steel-case-sapphire-crystal-100m-water-resistant","provider":"IPPO JAPAN WATCH ","version":"1.0","type":"link"}