Jaeger-LeCoultre

Polaris Perpetual Calendar

Name: Jaeger-LeCoultre Polaris Perpetual Calendar Q9088180
Brand: Jaeger-LeCoultre
SKU: Q9088180

Ref. Q9088180

2022–present · 42mm · caliber Jaeger-LeCoultre Cal. 868/AA: in-house automatic, 28,800bph, 70h PR, 46j; 332 components, perpetual calendar with both-hemisphere moon phase

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Movement tier: unclassified · caliber Jaeger-LeCoultre Cal. 868/AA: in-house automatic, 28,800bph, 70h PR, 46j; 332 components, perpetual calendar with both-hemisphere moon phase · 70h power reserve (2.9 days)

Medium-large: suits wrists 6.5 in+ (16.5 cm+)

42 mm case. Wears confidently on average to larger wrists. May overhang on slender builds.

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Authentication

A perpetual calendar inside a sports case, which is an unusual pairing and the reason to be careful: the calendar is the expensive part and the part most likely to have been mishandled by a previous owner.

Known issues in the market

A perpetual calendar that has been left to stop must be set forward through every missed day, and forcing the single corrector pusher while the calendar is mid-change is how these get damaged. Ask whether it has ever jammed.
The moon phase shows both hemispheres. A watch where only one aperture moves is faulty rather than a variant.
The internal rotating bezel is driven by the upper crown. A bezel that will not turn, or turns without the crown, is a fault.

Area	What to check	What is correct	Red flag
dial	Calendar alignment when settled	Day, date, month and year apertures fully framed with no partial characters outside the changeover window	An indication sitting between two positions, which suggests a slipped calendar wheel
dial	Both-hemisphere moon phase	Both moon apertures track together and agree with the date	One aperture static while the other moves
crown	Upper crown driving the internal bezel	Turning the upper crown rotates the inner bezel smoothly	A bezel that does not respond, or moves on its own
movement	Cal. 868/AA reserve	Roughly 70 hours from full wind, seconds hacking on the crown	A reserve well short of 70 hours

Common legitimate replacements

Straps and the interchangeable bracelet are swapped routinely.
Calendar correctors are a service item after mishandling.

Expert resources: Jaeger-LeCoultre service can confirm the reference and the calendar setting sequence. Note that jaeger-lecoultre.com blocks automated access, so this catalog's specification comes from Monochrome's launch sheet and Fratello.