REMARKS ON USING THE WATCH

●This watch is not water resistant, and care should be taken not to get it wet.

Also, do not touch the hour and minute hands with wet fingers, as this will adversely affect the time accuracy.

If the watch becomes wet, have it checked by an AUTHORIZED SEIKO DEALER or

SERVICE CENTER.

●As the front cover is opened and closed every time you read the time, we recommend that the push pin supporting it be replaced with a new one once a year.

English

BATTERY CHANGE

Cal. 2A27 & Cal. 4J27

2

Years

Cal. 7C17

5

Years

The miniature battery which powers your watch should last approximately 2 years (Cal. 2A27 and Cal. 4J27) / 5 years (Cal. 7C17). However, because the battery is inserted at the factory to check the function and performance of the watch, its actual life once in your possession may be less than the specified period. When the battery expires, be sure to replace it as soon as possible to prevent any malfunction. For battery replacement, we recommend that you contact an AUTHORIZED SEIKO DEALER and request SEIKO SR621SW (Cal. 2A27) / SEIKO SR521SW (Cal. 4J27) / SEIKO SR43SW (Cal. 7C17) battery.

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Seiko 2A27, 7C17, 4J27 manual Remarks on Using the Watch, Battery Change
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4J27, 2A27, 7C17 specifications

Seiko, a brand synonymous with precision and innovation in the watchmaking industry, has developed several remarkable movements over the years. Among these, the Seiko 7C17, 2A27, and 4J27 stand out for their unique features and technological advancements.

The Seiko 7C17 is a quartz movement introduced in the early 1990s. It is particularly renowned for its durability and reliability, making it a favorite among everyday watch enthusiasts. One of its standout characteristics is the use of a high-frequency oscillator, which enhances its accuracy. The 7C17 operates at a frequency of 32,768 Hz, allowing it to maintain exceptional precision. Additionally, the movement is equipped with a date function and a 24-hour display, catering to those who appreciate multifunctionality in their timepieces. The reliable battery life of the 7C17 further enhances its suitability for everyday wear.

Moving on to the Seiko 2A27, this movement is notable for its use in various popular Seiko models. One of its key features is the bi-directional automatic winding mechanism, which means that the watch can be powered by both wrist movement and manual winding. This flexibility ensures that the watch remains powered even if it is not worn for an extended period. The 2A27 also features a hacking function, allowing the seconds hand to stop when adjusting the time, thereby enabling precise time setting. This movement is revered not only for its reliability but also for its user-friendly attributes.

Lastly, the Seiko 4J27 is another impressive quartz movement known for its advanced functionalities. Designed for use in watches that require additional features, the 4J27 incorporates a perpetual calendar function, which automatically adjusts for leap years and differing month lengths. This ensures that the watch requires minimal manual adjustments. The 4J27 also includes a suggested power reserve indicator, which alerts the wearer when the battery needs replacement, preventing unexpected stops.

In summary, the Seiko 7C17, 2A27, and 4J27 movements exemplify Seiko's commitment to quality and innovation. With features like high-frequency oscillators, bi-directional automatic winding, and perpetual calendars, these movements cater to various consumer needs. Their reliability, precision, and advanced technologies continue to enhance the reputation of Seiko in the world of horology.
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