Seiko Group 6S28 manual Specifications

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English

SPECIFICATIONS

1

Display system

 

 

Time/Calendar

Hour, minute and small second hands

 

 

Date is displayed in numerals

 

Stopwatch

Measures up to 12 hours

 

 

Stopwatch hour, Stopwatch minute and Stopwatch second

 

 

hands

 

Power reserve indicator (for Cal. 6S37 only)

 

2

Vibrations per hour

28,800

3

Loss/gain (daily rate)

 

 

6S28

Between +25 and -15 seconds at normal temperature range

 

 

(between 5 °C and 35 °C or between 41 °F and 95 °F)

 

6S37

Between +15 and -10 seconds at normal temperature range

 

 

(between 5 °C and 35 °C or between 41 °F and 95 °F)

4

Continuous operating time

Approx. 50 hours

5

Driving system

Automatic winding type with manual winding mechanism

6

Number of jewels

 

 

6S28

34 jewels

 

6S37

40 jewels

The accuracy above is factory adjusted.

Due to the characteristics of mechanical watches, any actual daily rate may not fall within the range of time accuracy specified above dependent on the conditions of use, such as the length of time during which the watch is worn on the wrist, temperature, arm movement, and whether the mainspring is wound up fully or not, etc.

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Contents Cal S28, 6S37 Contents Names of the Parts Characteristics of a Mechanical WatchSelf-winding type, automatic winding type How to manually wind the mainspring by turning the crown HOW to USECheck the type of the crown of your watch HOW to SET the Time and Date EnglishDate adjustment at the beginning of the month Standard Measurement HOW to USE the StopwatchAccumulated Elapsed Time Measurement How to read the stopwatch minute hand TachymeterFor models with tachymeter scale on the dial To Measure the Hourly Average Speed of a VehicleFor models with telemeter scale on the dial TelemeterTo Measure the Hourly Rate of Operation English HOW to Read the Power ReserveStop Remarks on the automatic mechanism of the mainspring To Preserve the Quality of Your WatchCare of Your Watch Rash and Allergic Reaction Precautions on Wearing Your Watch Troubleshooting Places to Keep Your WatchAccuracy of Mechanical Watches Specifications

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.