Wrist-portable apparatus

A wrist-portable apparatus comprising:

• a case;
• a display member rotatably mounted in the case for displaying information;
• an operational shaft mounted to undergo rotational and sliding movements relative to the case so that the operational shaft may be axially displaced between a pushed-in position, in which the operational shaft is pushed into the case, and a drawn-out position, in which the operational shaft is drawn out from the case;
• a clutch assembly for transmitting rotational movement of the operational shaft to the display member to rotate the display member when the operational shaft is displaced to the drawn-out position and for releasing the transmission of the rotational movement of the operational shaft to the display member when the operational shaft is displaced to the pushed-in position, the clutch assembly comprising a gear wheel engaged with the display member and connectable to the operational shaft to transmit rotational movement of the operational shaft to the display member when the operational shaft is displaced to the drawn-out position;
• a manual control stem integrally connected to an end of the operational shaft and disposed on a side surface portion of the case for controlling rotation of the operational shaft and displacement of the operational shaft to the pushed-in and drawn-out positions;
• and
• a tubular member integrally connected to the case and having a first end portion disposed in the case and engaging a portion of the gear wheel so as to allow rotational movement of the gear wheel relative to the tubular member, and having a second end portion extending outwardly from the case for removable locking engagement with the manual control stem to integrally connect the manual control stem to the case when the operational shaft is displaced to the pushed-in position.