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Problem

Possible causes

Solutions

 

The watch has been left

Normal accuracy will resume

 

in extremely high or low

when the watch returns to normal

 

temperatures for a long time.

temperature.

 

The watch was brought

Normal accuracy will resume when the

 

into close contact with a

watch is kept away from close contact

 

magnetic object.

with the magnetic source. If this

 

 

condition persists, consult the retailer

The watch gains/loses

 

from whom the watch was purchased.

time temporarily.

You dropped the watch, hit

Normal accuracy will not resume.

 

it against a hard surface or

Consult the retailer from whom the

 

wore it while playing active

watch was purchased.

 

sports. The watch was

 

 

exposed to strong vibrations.

 

 

The watch has not been

Consult the retailer from whom the

 

overhauled for more than

watch was purchased.

 

3 years.

 

The glass is blurred and

Water got inside the watch

Consult the retailer from whom the

the blur persists for a

due to the deterioration of

watch was purchased.

long time.

the gasket, etc.

 

The stopwatch minute

Time setting is done

Push the crown back in to the normal

hand and stopwatch

while the stopwatch is

position. And then, stop and reset the

hour hand move while

operating.

stopwatch. After that, if you wish to

you are setting the

 

set the time, follow the procedures in

watch to the current

 

“HOW TO SET THE TIME AND DATE”

time.

 

section of this booklet.

•For the solution of troubles other than listed above, contact the retailer from whom the watch was purchased.

ACCURACY OF MECHANICAL WATCHES

●The accuracy of mechanical watches is indicated by the daily rates of one week or so.

●The accuracy of mechanical watches may not fall within the specified range of time accuracy because of loss/gain changes due to the conditions of use, such as the length of time during which the watch is worn on the wrist, arm movement, whether the mainspring is wound up fully or not, etc.

●The key components in mechanical watches are made of metals which expand or contract depending on temperatures due to metal properties. This exerts an effect on the accuracy of the watches. Mechanical watches tend to lose time at high temperatures while they tend to gain time at low temperatures.

●In order to improve accuracy, it is important to regularly supply energy to the balance that controls the speed of the gears. The driving force of the mainspring that powers mechanical watches varies between when it is fully wound and immediately before it is unwound. As the mainspring unwinds, the force weakens.

Relatively steady accuracy can be obtained by wearing the watch on the wrist frequently for the self-winding type and winding up the mainspring fully everyday at a fixed time to move it regularly for the wind-up mechanical type.

●When affected by strong external magnetism, a mechanical watch may loss/gain time temporarily. The parts of the watch may become magnetized depending on the extent of the effect. In such a case, consult the retailer from whom the watch was purchased since the watch requires repair, including demagnetizing.

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Seiko Group 6S28 manual Accuracy of Mechanical Watches
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6S28 specifications

Seiko Group's 6S28 movement is an exemplary piece of horological engineering that showcases the brand's commitment to precision and innovation. This automatic movement is primarily known for its use in some of Seiko's popular watches, combining both traditional craftsmanship and modern technology.

One of the defining features of the 6S28 movement is its robustness. With a frequency of 28,800 vibrations per hour, it ensures a high level of accuracy, making it a reliable choice for enthusiasts and everyday wearers alike. This frequency, standard for many of Seiko’s higher-end movements, allows for a smoother sweep of the second hand, which is not only visually appealing but also enhances timekeeping precision.

The 6S28 movement boasts a power reserve of approximately 45 hours, providing ample time between winding sessions. This is particularly advantageous for users who may not wear their watches daily, allowing the timepiece to remain operational without requiring frequent winding. Additionally, the movement incorporates a hacking mechanism, enabling users to set the time with precise accuracy by stopping the second hand when adjusting the hour and minute hands.

A key technological highlight of the 6S28 is its use of Seiko's proprietary escapement design, which minimizes friction and enhances durability. This allows the movement to be less susceptible to wear and tear, prolonging the life of the watch. Furthermore, the 6S28 features a date complication, conveniently positioned for easy readability, enhancing its practical use for daily wear.

Another notable characteristic of the 6S28 is its anti-magnetic properties. This is particularly important for a modern watch, as magnetic fields are omnipresent in today’s environment and can adversely affect timekeeping precision. The inclusion of anti-magnetic materials within the movement adds a layer of reliability that is appreciated by both watch collectors and casual wearers.

In terms of design, the 6S28 movement is elegantly finished, with various details that reflect Seiko's dedication to aesthetic value. The movement is often visible through transparent case backs, allowing wearers to appreciate the intricate workings of the mechanism.

Overall, the Seiko Group's 6S28 movement merges functionality with craftsmanship in a way that meets the high standards of modern horology. Its blend of advanced technology, reliability, and aesthetics makes it a sought-after choice for watch enthusiasts seeking a timepiece that embodies both heritage and innovation.
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