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jason

Vostok Amphibia

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Here is a Vostok Amphibia watch produced in Soviet Union in 1989, was equipped with 2409 manual winding movement, with 48 hours power reserve. Another one was created by Russia in 2011, 2416B automatic winding movement, with 30 hours power reserve.

The case back and crown are the most distinctive. The case back is fixed by a threaded locking ring, takes advantage of avoiding distortion, and utilized the larger gasket. Meanwhile, this causes no problems to the water resistance after opening the case back, and increases the lifespan of gasket. Actually, there are similar with screws, but the pressure is 360 degree, which is more reliable. Moreover, the contact area is larger than the other general diving watches.

The crown is disengaged design, the O-ring installs inside the crown, only when the crown was being screwed that this was water proof. Without the pressure of the spring, So during winding and setting time, it can eliminate the pressure, protect the crown from abrasion.

 

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