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Seiko H556, H558 manual Set day and date, Set local digital time, Set alarm time

Models: H558 H556

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•Push button B until the time is on the display.

•Pull crown to position 2.

•Turn the crown in direction X to increment time; turn faster to maker bigger steps.

•Turn the crown in direction Y to decrement time, turn faster to maker bigger steps,

•Push button B to reset the seconds, if seconds are <29 the seconds go to zero and the minutes do not change, if the seconds are >29 the seconds go to zero and the minutes are incremented by one.

•Push crown to position 1 when digital time is correct.

Set day and date.

•Push button B until the day and date are on the display.

•Pull crown to position 2.

•Turn the crown in direction Y to change the day.

•Turn the crown in direction X to change the date, now the month and date are shown.

•Turn crown in direction X to set the month and date.

•Push crown to position 1 when day and date are correct.

Set local digital time.

•Push button B until the local time is on the display. (-L on display)

•Pull crown to position 2.

•Turn the crown in direction X to increment time, turn faster to maker bigger steps.

•Turn the crown in direction Y to decrement time, turn faster to maker bigger steps.

•Push crown to position 1 when local time is correct.

Changeover between 12-Hour and 24-Hour indication.

•Push button B until the time is on the display.

•Pull crown to position 2 and after 1 second back to position 1 again. Just repeat this action to switch over again.

Set alarm time.

•Push button B until the alarm time is on the display. (AL on display)

•Pull crown to position 2.

•Turn the crown in direction X to increment time, turn faster to maker bigger steps.

•Turn the crown in direction Y to decrement time, turn faster to maker bigger steps.

•Push crown to position 1 when alarm time is correct.

•When the alarm time is set the alarm function turns on automatically. (See table below)

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Seiko H556 Set day and date, Set local digital time, Changeover between 12-Hour and 24-Hour indication, Set alarm time
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H558, H556 specifications

Seiko H556 and H558 are notable timepieces from Seiko that showcase the brand's commitment to innovation, functionality, and design. Released in the 1980s, these watches were part of Seiko’s quest to merge advanced technology with everyday wearability. The H556 and H558 models are unique because they feature both analog and digital displays, making them highly versatile and user-friendly.

One of the main characteristics of the H556 and H558 is their hybrid dial, which integrates both traditional hour and minute hands alongside a digital display that provides a wealth of information. The analog hands are powered by a quartz movement, thus offering exceptional accuracy, while the digital screen is driven by a microprocessor. This innovative combination allows wearers to check the time instantly while also accessing additional functions such as alarms, countdown timers, and calendars.

Both models are water-resistant, making them suitable for a wide range of activities, from swimming to everyday wear. The H558, in particular, is well-regarded for its robust build quality and is often associated with diving and outdoor activities. This durability can be attributed to the sturdy case construction and the use of high-grade materials, ensuring that the watches can withstand rigorous usage.

The designs of the H556 and H558 are also noteworthy. They feature a bold, sporty aesthetic that appeals to those looking for a watch that conveys both functionality and style. The digital readouts are easy to read, even in low-light conditions, thanks to the incorporation of a backlight feature. This ensures clear visibility, which is crucial for outdoor enthusiasts and individuals with an active lifestyle.

Furthermore, the H558 model is particularly significant in the Seiko legacy, as it was one of the first watches to introduce a countdown timer, a feature that was revolutionary at the time. This functionality has since become prevalent in many digital watches.

Overall, the Seiko H556 and H558 timepieces represent a fascinating chapter in the brand's history, merging innovative technology with practical designs that continue to attract watch enthusiasts today. Their blend of analog and digital functions, coupled with robust features, cement their status as classic examples of Seiko's forward-thinking approach.