Grand Seiko European Service Center question

Hello guys,
Today my GS SBGN003 started ticking at a two-second interval, so I guess the battery needs to be replaced soon. Since I am based in Poland I wanted to ask our European members, any experience with European authorized service centers? Any good/bad stories that you’d want to share? Any thoughts on the Grand Seiko Deutschland in particular? As this seems to be the default one for Poland (as per GS website).

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Also, how do you go about…

Grand Seiko European Service Center question

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The reason the HAQ watch is meaningful to me.

I’d like to share my example with all of you
Watch A is a HAQ watch. It steadily gains 0.4 to 0.6 seconds per month. In a year, it accumulates a gains 6 seconds.
Watch B is an RC watch. When it’s not synchronized, it gains 0.25 seconds per day. Due to environmental factors and usage habits , it can’t guarantee successful synchronization every day. The time interval between two successful synchronizations can range from 0 to 10 days.
If we consider watch accuracy , Watch B seems superior…

The reason the HAQ watch is meaningful to me.

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On the origins of short-cycle logical regulation aka digital count adjustment

For a long time, members of this forum thought inhibition was the only feasible method for ‘modern’ (ie single crystal 32 kHz) HAQ. Some members, like Catalin, suspected alternatives based on technical manuals, but the specifics remained vague. Thanks to (Japanese) sources I have found and shared, we now know many of the specifics, not only about early analog TC, but also alternative methods to inhibition, like time-division capacitor switching. Most general info comes from a…

On the origins of short-cycle logical regulation aka digital count adjustment

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