| 摘要 |
The visible watch face, behind the hands, or time display, can be changed from the front. The watch case central zone has four superimposed discs, the upper and lower (1, 10) rendering the case watertight. The central discs display the current minute (2) and hour (6), with an external envelope integrating the complete mechanism. A movable envelope base drawer receives the visible face. Toothed plastic belts (3, 7) may drive the minute and hour display discs, driven and maintained horizontal by six rollers (4, 5,9), integral with the mechanism (12), within the envelope. The sliding drawer opening may be push button (11) controlled, ejected by a stem, spring loaded up to stop, when its display is to be changed.
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