Two buttons control the chronograph functions: The 2:00 pusher for starting and stopping the chronograph, and the 4:00 pusher to reset the seconds and minute counters. Calibre 3133 is nominally a 23 jewel movement, but several jewels are used on both sides, allowing some to claim 31 jewels. This is quite different from the Venus and Valjoux calibres with which it shares components and design elements.
Those are slow 18,000 A/h movements with fewer jewels (17). The Swiss movements use an entirely different assortment (balance and escapement) and has many differences in the bridges and levers.
But many others are identical between the movements. The movements are not interchangeable either, since the dial feet are located differently, and the movement is 1 mm thicker. Interestingly, the date wheel on the Poljot advances clockwise like modern ETA movements, while older Venus calbres used counter-clockwise date wheels. There are a few variants on the basic Poljot design. Calibres 31679 (with moon phase hand) and 31682 (with day/night display) include extra complications.The 17 jewel calibre 3105 lacks the chronograph functions and simply has sub seconds at 9:00 and date window at 3:00. It was the watch factory "Poljot", which used Swiss technology to make a 31 mm chronograph 3133. Most parts of poljot 3133 movement are identical to the Valjoux 7734 movement. Poljot introduced its own modifications into the swiss mechanism. These include the use of precious stones, anti-shock protection system and (Glucydur balance). The diameter of the balance was reduced, so 3133 is faster. If you need more information or pictures, please ask me!!!! The item "NEW OLD STOCK POLJOT 3133 CHRONOGRAPH RARE MINERAL CRYSTAL, LUMINOUS HANDS" is in sale since Friday, February 5, 2016. This item is in the category "Jewelry & Watches\Watches, Parts & Accessories\Wristwatches". The seller is "rarewatchdeal" and is located in Moscow, default. This item can be shipped worldwide.