Patent ID: 7717616

Claim:
A time zone timepiece including: (a) an hour hand capable of moving forward or backward in one hour steps by means of a manually actuated time setting stem without affecting a minute display, wherein the minute display includes a minute hand and said hour hand is fitted onto an hour pipe about which an hour wheel is adjusted to pivot freely, driven by a motion work; and (b) an additional wheel secured to the hour pipe driving an additional device, wherein the hour wheel is coupled to the additional wheel by a first coupling mechanism comprising a limited torque mechanism; and (c) a second coupling mechanism moveable between a first position and a second position, wherein when the second coupling mechanism is in the first position the second coupling mechanism rigidly couples the hour wheel and the additional wheel, and when the second coupling mechanism is in the second position the second coupling mechanism is disengaged from the hour wheel and the additional wheel, and wherein the additional device displays a time-related information but not the current time displayed by the hour hand and the minute hand.