If you decide to have it serviced, 🙏 please 🙏 make sure you to do your research on who you choose to do the work. I just went through an absolutely terrible experience recently. Not solid vetting on my part and boy did I learn a lesson. Since the watch has significant meaning TAKE YOUR TIME in your decision making process. Great watch by the way.
The wobble is as unique to Vostok is the sound is to Harley Davidson. It’s a design or engineering creation that protects the stem. If it gets bumped, then it is protected. It’s smarter than I am capable of explaining here. However, there’s a lot of videos on YouTube that explain the wobble.
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