Editorial
The Polaris Date 42mm is Jaeger-LeCoultre's working sport watch , a modernized descendant of the 1968 Memovox dive watch, built for daily use at a serious depth rating. At 200m water resistance with an inner rotating countdown bezel, it puts real tool-watch credentials behind the Manufacture name. Collectors arrive here wanting JLC's in-house movement and build quality without the dress-watch context of the Reverso or Master lines.
The Polaris name was revived in 2018 as part of JLC's first comprehensive sport line, replacing the aging Master Compressor family. The Q9068670 runs the caliber 899AC, a 35-jewel automatic with a 70-hour power reserve and column-wheel construction , a meaningful step up from the entry movements in some competitors at this price tier. The 42mm case occupies the middle of the current Polaris Date range, which also spans 36mm and 41mm references.
No significant mid-production movement or case change has occurred on this reference since its 2018 introduction. The integral bracelet option and rubber strap variant are both factory configurations, not aftermarket modifications.
Inspect the inner rotating bezel for even rotation and positive click engagement , the mechanism is exposed to water and debris and does show wear on pre-owned examples that were used hard. The crown and case back gaskets are the first service items to degrade on dive-rated watches; ask for any service history and pressure-test documentation. Check the date wheel alignment at midnight: a slow-setting or partially-advanced date can indicate a worn setting lever or a movement that has been serviced without OEM parts.
The bracelet on early 2018-2019 production units had reported reports of clasp flex under daily wear; later production tightened the tolerances, so look at the clasp stamping date if buying vintage-adjacent new-old-stock.
