An electronic timepiece has an outside perimeter part disposed around a dial, hands, and a control unit. Further, 40 to 60 time zone indicators including time difference information representing the time difference between Coordinated Universal Time (UTC) and the standard time used in each time zone are on the outside perimeter part. The control unit indicates a specific time zone indicator with a hand.

An electronic device with waterproof structure includes an assembly and a manipulation member movably disposed on an outer surface of the assembly. The assembly includes a case and an optical detection module. The case defines a waterproof space and has a translucent region. The optical detection module is arranged in the waterproof space. The optical detection module has a lighting unit and a sensor array. Light emitted from the lighting unit enables to travel out of the waterproof space by penetrating through the translucent region. At least part of the manipulation member is corresponding in position to the translucent region. The lighting unit is configured to emit light onto the manipulation member, and the sensor array is configured to receive the light reflected from the manipulation member.

Facilitate operations to release a bezel from a rotation prevented state and to rotate the bezel and avoid erroneously releasing the rotation prevented state. A timepiece includes a restrictor having engaging teeth and being movable between a restricted position and a release position by engaging/disengaging the engaging teeth with teeth of the bezel. The timepiece also has a holding mechanism holding the restrictor between a held state, i.e., restricted position and a non-held state. i.e., the release position. The holding mechanism includes two push-buttons and a release mechanism including a spring bar and engaging hole. The release mechanism switches the restrictor to the non-held state irrespective of a continuance of applying the pressing operation forces after the pressing operation forces are applied simultaneously to the two push-buttons.

A centralized control unit for controlling an arm moving in a clockwise direction and in a counter-clockwise direction includes an arbor about which the centralized control unit pivots. The arm is integrally mounted on a toothed actuating wheel as an assembly, and the assembly is mounted to freely rotate about the arbor. The centralized control unit also includes a wheel to control the arm in the clockwise direction, a wheel to control the arm in the counter-clockwise direction, and a power wheel kinematically connected to an independent barrel to drive the arm.

A watch case includes a case middle, a bezel, and an external element at least partially disposed between the case middle and the bezel. The bezel includes at least one hollow revealing the external element. The external element is attached directly to the case middle, independently of an attachment of the bezel to the case middle.

Provided is a watch including a dial, a first pointer, and a second pointer. A plurality of hour markers and a plurality of markers other than the plurality of hour markers are mounted on the watch. The first pointer points at one of the plurality of hour markers on the dial by rotating around a first rotation axis. The second pointer points at one of the plurality of markers on the dial by rotating around a second rotation axis. Numerals or letters respectively corresponding to the plurality of markers are placed on respective extension lines of the plurality of markers adjacent to one another.

The present application discloses a watch case assembly displaying two time zones as well as a watch. The watch case assembly comprises a watch case, a dial and a bezel. The dial is disposed inside the dial cavity of the watch case and intended to display the time of the first time zone. The bezel is disposed on the watch case and around the dial and intended to display the time of the second time zone. The bezel cavity of the watch case has at least one fixing part, the bezel has at least two installation parts fixed to the fixing parts in a detachable manner, the assembly structure of the fixing parts and the installation parts is detachable, at least two installation parts on the bezel may be fixed to the fixing parts respectively.

A platform for displaying several mutually different horometric items of information, includes as many crowns as the horometric items of information to be displayed on the platform. Each of the crowns is arranged to receive an associated information support and is movable in rotation at a speed selected according to a horometric item of information displayed on the associated information support.

A centralized control unit for controlling an arm moving in a clockwise direction and in a counter-clockwise direction includes an arbor about which the centralized control unit pivots. The arm is integrally mounted on a toothed actuating wheel as an assembly, and the assembly is mounted to freely rotate about the arbor. The centralized control unit also includes a wheel to control the arm in the clockwise direction, a wheel to control the arm in the counter-clockwise direction, and a power wheel kinematically connected to an independent barrel to drive the arm.

An apparatus may include a display for visually representing solar time and civil time simultaneously. In some embodiments, the apparatus includes a representation of a horizon extending across the display, an icon of the sun corresponding to a solar time by its position relative to the representation of the horizon and to a top portion of the display, the icon of the sun configured to revolve once per solar day about a center portion of the display, and a plurality of hour indications corresponding to civil-time hours of a day, the plurality of hour indications set circumferentially around the display. The angular position of the plurality of hour indications may be rotatable, thereby enabling the civil time of solar noon to appear at the top portion of the display.