Seiko 9R65, 9R15 manual How to use the stopwatch function, Accumulated elapsed time measurement

Page 13

How to use the stopwatch function

Make sure that the mainspring is sufficiently wound and the watch is working.

If your watch has screw-lock type buttons, unlock them.

"How to use the screw-lock type button" page 21.

Start measuring time.

Upon pressing of the START/ STOP button, the chrono-graph hands start moving and the stopwatch starts measuring time.

Stop measuring time. At the moment you want to finish the

measurement, press the START/STOP button again to stop the chronograph hands.

Example: 6 hours 20 minutes 10 seconds and 8

The chronograph minute hand on the 30-minute dial completes two

full rotations in an hour. To read the 30-minute dial, see the

display of the 12-hour dial as a rough indication.

Reset the chronograph hands.

After stopping the chronograph hands, press the RESET button to return all the chronograph hands to the 0 position.

22Chronograph (For Cal. 9R86, 9R84)

Accumulated elapsed time measurement

Make sure that the mainspring is sufficiently wound and the watch is

 

English

If your watch has screw-lock

working.

 

type buttons, unlock them.

 

 

"How to use the screw-lock type

 

button" page 21.

 

Start measuring time.

Upon pressing of the START/ STOP button, the chronograph hands start moving and the stopwatch starts measuring time.

Stop measuring time.

At the moment you want to stop the first measurement, press the START/STOP button again to stop the chronograph hands. The measured time will be displayed.

Restart measuring time.

Upon pressing of the START/STOP button again, the chronograph hands restart moving from the position they had previously stopped.

Stop measuring time.

At the moment you want to stop the second measurement, press the START/STOP button again to stop the chronograph hands. The measured time displayed at this time will be the total of the first and the second measurements (accumulated elapsed time).

Repeat measuring time cumulatively. Step 5 and 6 above can be repeated required.

As you repeat pressing of the START/ STOP button, the measurement will stop and restart and each elapsed time

measurement will be accumulated. as

Reset the chronograph hands.

 

After stopping the chronograph hands,

 

press the RESET button to return all the chronograph hands to the 0

 

position.

 

Chronograph (For Cal. 9R86, 9R84)

23

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Contents JSYGS9R1-1302 Spring DriveContents History of Spring Drive Spring Drive Mechanism ① Gear train hands MainspringTri-synchro regulator About the caliber number How to check the caliber numberWater resistance Precautions for diving 9R65, 9R15 Regular models Hour hand Second hand Crown Power reserve Date Indicator9R65, 9R15 Diver’s models 9R66 Model with a rotating bezel 9R66 Regular model9R86, 9R84 How to read the power reserve indicator Power reserve indicatorCrown Screw-lock type crownTips for more accurate time setting How to wind the main springDate adjustment at the end of the month How to set the time and dateBefore using the stopwatch function How to use the screw-lock type buttonNames of the chronograph parts and their function Screw-lock type buttonAccumulated elapsed time measurement How to use the stopwatch function② If your watch has screw-lock Working Type buttons, unlock themHow to measure average speed of your vehicle How to use the tachymeterHow to compute productivity rate per hour How to set the time and calendarHow to set the calendar Time difference adjustment function How to use the 24-hour handHow to use the time difference adjustment function Selectable display mode How to use the bi-directional rotating bezelWhen daylight saving time is observed On the rotating bezelUnidirectional rotating bezel How to use the rotating bezelList of time zone differences in major regions of the world How to use the diver adjuster Diver adjusterAfter-sale service Replacement partsDaily care GuaranteeMagnetic resistance Magnetic influence BandMetallic band Leather bandLumibrite TroubleshootingIf your watch has Lumibrite Reference data on the luminanceSPECIFICATIONS(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.