| 摘要 |
The invention relates to a watch movement comprising an annular casing ( 10 ), having an external diameter D, which is provided with a central round opening ( 48 ) that is defined by an internal diameter d. According to the invention, the gear train ( 34 ) comprises a mobile ( 36 ) consisting of a minute wheel ( 36 a) and a pinion ( 36 b), a cannon pinion ( 38 ), which is driven by the minute wheel ( 36 a) and intended to support a minute hand ( 40 ), and an hour wheel ( 42 ) which is driven by the pinion ( 36 b) and intended to support an hour hand ( 44 ). The cannon pinion ( 38 ) and the hour casing ( 10 ) and are provided with a central opening that is more or less equal to d. The minute wheel ( 36 a) is provided with a diameter that is slightly smaller than (D-d)/2.
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