The Jaeger-LeCoultre Polaris Geographic, reference Q9078640, is a 42 mm stainless-steel automatic watch that displays a second time zone selected from a 24-city disc. Its Calibre 939 has a manufacturer-listed 70-hour power reserve; the watch is rated to 10 bar and is supplied with interchangeable black rubber and blue-grey canvas straps.
How the Polaris Geographic displays a second time zone
A city disc around the dial lets the wearer select a location, while a small second-time-zone dial at 6 o’clock shows the corresponding time. The city is selected with the crown at 10 o’clock. Jaeger-LeCoultre lists a 24-hour display, seconds, power-reserve indication, hours and minutes among the functions. See the official Polaris Geographic listing.
Q9078640 specifications
| Specification | Jaeger-LeCoultre listing |
|---|---|
| Reference | Q9078640 |
| Case | Stainless steel; 42 mm diameter; 11.54 mm thick |
| Water resistance | 10 bar (manufacturer-published rating) |
| Movement | Automatic Calibre 939; 282 components; 34 jewels; 4.97 mm movement thickness |
| Power reserve | 70 hours, as listed by the manufacturer |
| Frequency | 28,800 vibrations per hour |
| Listed functions | City-selected second time zone on a 24-city disc, 24-hour display, seconds, power-reserve indication, hours and minutes |
| Straps | Black rubber strap fitted; complimentary blue-grey canvas strap supplied; quick-release system; 21 mm lug width |
Setting the time and city
The product listing identifies the 10 o’clock crown as the control for selecting the desired city. For the precise sequence to set the watch and second time zone, consult the Jaeger-LeCoultre-hosted Polaris Geographic user manual; the model’s functions alone do not establish every crown position or setting step.
Straps, replacements and travel use
The supplied black rubber and blue-grey canvas straps can be changed using the watch’s quick-release system. Jaeger-LeCoultre specifies a 21 mm lug width, but width alone does not confirm that a generic strap will fit: the attachment geometry and quick-release design also matter. For an exact replacement, use Jaeger-LeCoultre’s strap finder or an authorized channel. A padded single-watch travel case is an optional way to protect a watch in transit; check the case’s dimensions and do not assume a particular case is endorsed by the manufacturer.
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Price and availability
The official listing does not give a numeric price. Regional pages may present product, contact or purchase options, so check the Jaeger-LeCoultre site for your location or ask an authorized retailer to confirm current local pricing and stock.
Do not confuse it with the Polaris Automatic
The Polaris Geographic Q9078640 is distinct from the Polaris Automatic Q9008180. The latter is listed with a 41 mm case, Calibre 898 and a 40-hour power reserve; those specifications do not apply to the Geographic. View the separate Polaris Automatic listing.
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