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buhoWatch review the Modtok conversion case for Vostok watches.

Thanks to Giovanni, the guy behind the buhoWatch Youtube channel for an interesting video reviewing the Modtok conversion case from Once again a Youtuber shows how easy it is to convert a standard classic Vostok watch into a watch with sapphire crystal and uni-directional clicking bezel.

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Vostok 090 with uni-directional clicking bezel

First trial of the uni-directional bezel Modtok Vostok Conversation Case.

Here is the first video of the uni-directional click bezel on a Modtok Vostok 090 conversion case. as you can see, the actual bezel used here is a standard Seiko SKX007 bezel with a new insert. THe click ring and gasket is standard Seiko SKX007.

Soon, we will have the first cases for sale featuring a sapphire crystal with the ability to take any Seiko SKX007 click ring, gasket and bezel.

Stay tuned for more updates.

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Sample Vostok Case for Sapphire Crystal

Sample Case

Vostok 090 Conversion Case

We are happy to anounce that we have received the first sample case. In short, everything is good. As you can see from the picture, it has the holes for the fitting of a SKX007 click spring along with a compatible SKX007 bezel. To enable handset clearance, we are having a high double domed sapphire crystal specially made just for this case.

As for the rest of the case, it is sandblasted. It takes a regular Vostok caseback, ring and gasket. It also takes any of the long stem Vostok crowns. So as well as being a direct conersion for the Vostok 090, it is also a direct conversion for the Vostok 100, 110, 020, 150 and 670.

The case will be known as the Modtok 090 Conversion Case by Vostok Mods.

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Vostok 090 Coversion Case Factory Sample now in Production

The drawings have been approved and production of the first sample sapphire crystal conversion case has started. Hopefully we will have a complete prototype case to inspect within 2 weeks. Very exciting to get to this stage of the Vostok to Modstok Conversion case.

The problem of the crystal clearing the handset has been achieved by using an high double dome sapphire crystal. By making a minor change to the case size we have also been able to enable the juse of a SKX007 clickspring and bezel system.

Now your Vostok 090 can have a sapphire crystal and a uni-directional clicking bezel!