This high-specification movement delivers the same accuracy (+5 to -3 seconds a day) and the same power reserve (55 hours) as the core Caliber 9S85, while also offering the GMT function that the international traveler needs to ensure that the accuracy of the time shown is not compromised when the time zone is changed. The GMT hand shows the time in the home time zone.
Pulling the crown out by one notch enables the hour hand to be adjusted without stopping the seconds hand so that the highly accurate timekeeping delivered by the Hi-Beat 36000 is not lost. Caliber 9S86 is the embodiment of the Grand Seiko ideal of high accuracy, maintaining exceptional precision in both the essential time of day display and the GMT function.
As an avid horology enthusiast and expert with a deep understanding of mechanical watch movements, I can confidently delve into the intricacies of the HOME Collections Mechanical Caliber 9S86 and the Mechanical Hi-Beat 36000 GMT. My extensive knowledge in watchmaking allows me to shed light on the technical aspects and innovations encapsulated within these timepieces.
The Caliber 9S86 is a testament to Grand Seiko's commitment to precision and high accuracy. The movement boasts a remarkable accuracy of +5 to -3 seconds a day, showcasing the brand's dedication to delivering exceptional timekeeping performance. Such precision is crucial for watch enthusiasts who demand accuracy in their timepieces.
Furthermore, the power reserve of 55 hours is a noteworthy feature, highlighting the watch's ability to maintain its functionality over an extended period without requiring manual winding. This is particularly advantageous for those who rotate between multiple watches or may not wear the watch every day.
The introduction of the GMT function in the Caliber 9S86 enhances its versatility, catering to the needs of international travelers. The GMT hand allows users to keep track of the time in their home time zone, addressing the challenges posed by changing time zones. This is a practical and functional addition, showcasing Grand Seiko's commitment to creating watches that accommodate the diverse lifestyles of their wearers.
A key technical feature worth emphasizing is the ability to adjust the hour hand without stopping the seconds hand when pulling the crown out by one notch. This seamless adjustment ensures that the highly accurate timekeeping of the Hi-Beat 36000 is not compromised, aligning with Grand Seiko's pursuit of precision in watchmaking.
In summary, the Caliber 9S86 is a masterful embodiment of the Grand Seiko ideal of high accuracy. It seamlessly integrates essential time of day display with the GMT function, catering to the demands of discerning watch enthusiasts and international travelers alike. Grand Seiko's commitment to exceptional precision and innovation is clearly evident in the meticulous design and engineering of the Caliber 9S86 movement.
