Jaeger LeCoultre Master World Geographic is the follow up of using watch case integrated with its movement. The Geographic function consists of a mechanism combining the case and movement and enabling one to activate the city disc. The city disc is thus guided separtely from the movement and this made it possible to design a reasonably-sized watch. In terms of function, the 24-hour ring directly indicates the time in 24 cities visually in relation to JLC terms as the privilege time zone shown in the 7 o'clock Hour and minute hands (same time as the privilege city as marked by a red triangle at 6 o'clock). By using the crown on 2 o’clock, you can select a city from the city disc and the sub dial at 7 o’clock will show this ‘priority time’. The city disc also indicates how to operate in case daylight savings (summer time) are applicable. JLC’s caliber 936 movement consists of 322 parts. The lower crown changes the time and synchronizes the local time and 24- hour time zone system. The Geographic WorldTimer is 43 mm wide and water resistant to 165 feet.

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