PURPOSE: To obtain a watch with a time-difference corrector capable of correcting only hour display through simple operation with-out changing minute and second display, by turning an hour axis independently by an external operation member for time-difference correction.

CONSTITUTION: For the correction of a time difference, pushing time-difference button 19 turns correction lever 21 counterclockwise and tip part 24b of the correction pawl turns clockwise joined cannon wheel 3 by pushing its teeth. Then, joined cannon wheel 3 and one stem 2 turns flexing three arm parts 4a of cylindrical wheel 4 and clocking continues while cannon wheel 4 and minute wheel 10 for days, cannon pinion 27, center wheel 9, 3rd wheel 8, and 4th wheel 7 are disconnected. Since hour axis 2 rotated in the direction leading the rotation of minute pinion 10a for days, no load is applied. Further, day rotary gear 11 engaged with cannon wheel 3 rotates together and drives day plate 13 and week plate 16 at the time when the calendar is changed. In this way, only the time can be corrected by a simple unit.