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Grand Seiko SLGB006 " Dawn of the Ice Forest" and the World's Most Precise Spring-Driven Movement at Watches & Wonders 2026







At Watches & Wonders 2025, Grand Seiko unveiled a groundbreaking auto watch with a significant contemporary in timekeeping accuracy: the particular 9RB2 automatic movement, that this brand claims is the most exact in its class. A year later, with Watches & Wonders 2026, this movement will iniciación in a limited-edition watch using a gold case-the first time this kind of movement has been made in rare metal. The dial design is definitely inspired by the snow-capped woodlands of Shinshu, the region the location where the movement was born. We will today take a closer look at the Grand Seiko SLGB006 " Start of the Ice Forest" watch and its 9RB2 movement.



The Spring Drive 9R65 Movement: The World's Most Precise Spring-Driven Movement



Grand Seiko patented the Spring Drive movement in the late 1970s in addition to first introduced it 23 years ago. This movement employed an entirely different regulating system coming from its Swiss counterparts' physical systems. It lacked an old-fashioned escapement, instead using a pulley system regulated and braked by a quartz oscillator as well as electronic control circuitry. Famously, the entire Spring Drive technique required no battery; the quartz module was entirely driven by the mainspring. In 2004, that technology reached its zenith with the introduction of the Spring Drive Calibre 9R65 movement. This movement differed substantially from the brand's previous motions: it not only featured intelligent winding and a 72-hour reserve of power but also a regulating process capable of achieving an reliability of ±15 seconds monthly.





Inside 2025, at Watches & Wonders, Grand Seiko introduced another major innovation for you to its Spring Drive movement: the Calibre 9RB2, an automatic movement with a 72-hour reserve of power, also featured in the fresh Grand Seiko SLGB006 " Ice Forest at Dawn" watch. The Calibre 9RB2 is named " Spring Drive UFA, " where " UFA" stands for " Ultra Fine Accuracy. " Its veracity is ±20 seconds, not necessarily daily, weekly, or month to month, but annually. With this advanced of precision-equivalent to roughly ±3 seconds per month, 10 seconds more accurate as compared to its predecessor-Seiko claims to allow us the most accurate mainspring-driven movements to date.



This kind of ±20-second-per-year (approximately ±3-second for every month) precision is attained through a self-developed quartz crystal oscillator whose frequency have been stabilized over a three-month period of time. Afterward, the oscillator is actually vacuum-sealed with a newly produced energy-efficient integrated circuit to attenuate external interference. Temperature settlement also plays a crucial function: before assembly, each quartz crystal is measured on different temperatures, allowing typically the movement to compensate for the particular smallest temperature variations that will otherwise affect its accuracy.



The Design and Design of the New Seiko Grand Seiko SLGB006 “Dawn inside the Snowy Forest” Since 2004, Spring Drive watches have been diligently crafted by watchmakers on the Shinshu Watch Workshop inside Shiojiri City, Nagano Prefecture. Here, in these highly useful workshops, every hour gun is hand-set onto often the dial, every 9R sequence Spring Drive movement will be handcrafted by skilled merchants, and every case is finished to a mirror-like finish in line with the principles of the Zaratsu buffing technique. The Shinshu Watch Workshop is located in the hill-rich region of Japan, praised for its harsh winters, and also this harsh winter is the creativity for the “Ice Forest” call design of this new watch. Near by the workshop lies the actual Kirimine Plateau, renowned for the " Ice Forest. " In the exceptionally cold wintertime, larch trees are blanketed in snow and ice, shimmering each day sunlight.



Grand Seiko cleverly captures winter months beauty of the Kirimine Plateau with its " Ice Forest" dial. Its design concept originates from the Japanese principle regarding " mitate, " which usually interprets the scene definitely not through direct depiction, yet through color, form, and also surface texture. The Grand Seiko SLGB006 " Ice Forest Dawn" watch comes with a finely textured dial using subtle gradients within a strong black tone, adorned having numerous reflective particles. Gold hour markers and palms contrast sharply with the darker dial, aiming to evoke the particular warm hues of a growing sun.



That 37mm diameter Grand Seiko SLGB006 " Ice Forest Dawn" watch is the 1st in the Evolution 9 series to be crafted in 18 CARAT gold. It features a black alligator leather strap and also a matching gold triple-folding form with a push-button release device. The case is 11. 4 mm thick and has any screw-down sapphire crystal circumstance back. It is water-resistant to help 100 meters (10 bar).