Seiko 9R65, 9R15 manual History of Spring Drive

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■INTRODUCTION - Spring drive watch –

Thank you for purchasing the Grand Seiko Spring Drive automatic winding Model.

The Spring Drive is Seiko’s unique mechanism in which the mainspring is wound by the natural motions of the user and accuracy is controlled by a microelectronics quartz mechanism while using the unwinding power of the mainspring to move the hands.

The Spring Drive powered by natural motions of the user can be called a watch that strongly combines and connects the user with the latest advancements in technology.

A mechanical watch of taste and refinement with an accuracy equivalent to a quartz watch, this sophisticated and innovative watch ticks in step with the pace of a person’s life.

This is a watch that creates a lifestyle for modern individuals who seek affluence and convenience in their life.

That is what the Grand Seiko Spring Drive automatic winding model is all about.

History of Spring Drive

Decades-long dream lives in the Grand Seiko

Grand Seiko’s history symbolizes the culmination of efforts and development aiming for better practical watches.

The Grand Seiko watch was born in 1960, reached the very top in the mechanical watch field around the world at the end of the 1960’s. After a hiatus of dozen years or so, in 1993, the Grand Seiko 9F series equipped with world-class quartz movement was released. In 1998, the 9S series mechanical movement that combined traditional craftsmanship and advanced technology was developed to reintroduce the Grand Seiko mechanical caliber. While using the unwinding power of the mainspring as its sole power source, the new mechanism Spring Drive realizes an average monthly rate of ±15 seconds (For Cal. 9R15, ±10 seconds), substantially exceeding the accuracy of conventional mechanical watches. The watch also embodies the concepts of Grand Seiko that continues the challenge of creating the best practical watch.

1960

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Released the first Grand Seiko.

1964

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Participated in the Neuchatel Observatory Competition in Switzerland

 

 

for the first time.

1968

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Released Japan’s first automatic winding 10-beat model, 61GS.

1968

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Won the first prize in the mechanical wrist chronometer category of

 

 

the Geneva Observatory Competition in Switzerland.

1978

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Filed a patent for the Spring Drive mechanism for the first time.

1982

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Filed a patent for the Spring Drive mechanism (registered). Started

 

 

initial development.

1988

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Released the first Grand Seiko quartz caliber.

1993

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Started the second development of the Spring Drive.

 

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Released the Grand Seiko 9F series equipped with world-class

 

 

quartz movement.

1997

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Started the third development of the Spring Drive.

 

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Released technological announcement of the Spring Drive at the

 

 

Swiss Society of Chronometry (SSC).

1998

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Exhibited the Spring Drive at BASELWORLD.

 

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Released the Grand Seiko 9S series mechanical caliber combining

 

 

traditional craftsmanship and advanced technology.

1999

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Released the manual-winding Spring Drive (CAL.7R68) limited

 

 

edition from SEIKO.

2000

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Started the fourth development of the Spring Drive.

2002

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Released the manual-winding Spring Drive (CAL.7R88) from CREDOR.

2004

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Released the Grand Seiko automatic winding Spring Drive (CAL.9R65).

 

 

 

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Contents JSYGS9R1-1302 Spring DriveContents History of Spring Drive Spring Drive Mechanism ① Mainspring Gear train handsTri-synchro regulator How to check the caliber number About the caliber numberWater resistance Precautions for diving Hour hand Second hand Crown Power reserve Date Indicator 9R65, 9R15 Regular models9R65, 9R15 Diver’s models 9R66 Regular model 9R66 Model with a rotating bezel9R86, 9R84 Screw-lock type crown Power reserve indicatorHow to read the power reserve indicator CrownHow to set the time and date How to wind the main springTips for more accurate time setting Date adjustment at the end of the monthScrew-lock type button How to use the screw-lock type buttonBefore using the stopwatch function Names of the chronograph parts and their functionWorking Type buttons, unlock them How to use the stopwatch functionAccumulated elapsed time measurement ② If your watch has screw-lockHow to set the time and calendar How to use the tachymeterHow to measure average speed of your vehicle How to compute productivity rate per hourHow to set the calendar How to use the 24-hour hand Time difference adjustment functionHow to use the time difference adjustment function On the rotating bezel How to use the bi-directional rotating bezelSelectable display mode When daylight saving time is observedHow to use the rotating bezel Unidirectional rotating bezelList of time zone differences in major regions of the world Replacement parts Diver adjusterHow to use the diver adjuster After-sale serviceDaily care GuaranteeLeather band BandMagnetic resistance Magnetic influence Metallic bandReference data on the luminance TroubleshootingLumibrite If your watch has LumibriteSPECIFICATIONS（Movement）

9R15, 9R65 specifications

The Seiko 9R series is a remarkable line of mechanical watches featuring Spring Drive technology, a hallmark of precision and innovation. Among its esteemed models, the 9R65 and 9R15 movements stand out for their unique characteristics and advancements.

The 9R65 movement is known for its impressive power reserve of up to 72 hours, which is significant for a watch powered by a spring-driven mechanism. This makes it extremely reliable for everyday wear, as users can take the watch off for a weekend without worrying about it stopping. One of the most notable features of the 9R65 is its smooth and continuous movement of the second hand, a signature of Spring Drive technology. Instead of ticking like traditional mechanical watches, the 9R65 provides a seamless glide, offering a visual experience that is both captivating and elegant.

On the other hand, the 9R15 movement, while sharing some similarities with the 9R65, takes the craftsmanship a step further with its chronograph function. This feature allows users to accurately measure elapsed time, making it ideal for sports enthusiasts and those who require precision timing. The 9R15 has a power reserve of approximately 60 hours, ensuring that it maintains its functionality over an extended period. Its robust design is complemented by the familiar Spring Drive mechanism, ensuring that while it offers additional functionality, it does not compromise on the smoothness and reliability typical of Seiko.

Both movements utilize Seiko’s advanced Spring Drive technology, which combines the best elements of mechanical and quartz watchmaking. This unique hybrid system allows for unparalleled accuracy, with variations of just one second per day, which is exceptional for a mechanical watch. Furthermore, the 9R series features a durable construction, incorporating high-quality materials such as stainless steel and ceramic, enhancing their longevity and resistance to wear.

In conclusion, the Seiko 9R65 and 9R15 movements exemplify the brand’s commitment to innovation, precision, and durability. Whether you prefer the minimalist elegance of the 9R65 or the added complexity of the chronograph in the 9R15, both options promise an exceptional blend of technology and artistry that showcases Seiko's prowess in horology. These movements not only cater to the demands of modern watch enthusiasts but also pay homage to the intricate traditions of watchmaking, making them a desirable choice for collectors and aficionados alike.
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