Strap for Polaris Chronograph Stainless Steel / Blue / Bracelet

The lug width of the Jaeger-LeCoultre Polaris 9028180 is 21.00mm. This measurement represents the distance between the shoulder points of the watch case where the strap attaches. It is a deliberate constructive specification of this model and requires purpose-built straps to maintain the aesthetic balance of the case.

For the Polaris 9028180, we recommend satin-finished alligator in natural tones (cognac, deep burgundy) or vegetable-tanned calf leather for natural patination. Shell cordovan offers elegant luminescence without excess. Avoid straps with aggressive colour inserts: the satin-finished steel case demands a restrained, timeless response.

Straps are exchanged via the buckle loop or quick-release system present on the lug. Use a rounded tool (never sharp) to gently remove the retaining bar. Position the new strap by aligning the bar perfectly with the lug shoulders. Do not force: movement should be smooth. If you prefer to avoid DIY, Atelier Casati Milano offers mounting services.

Yes, provided the lug width is precisely 21.00mm. Artisanal-quality straps built to your watch's specific dimensions will be compatible and often superior to OEM products in craftsmanship and ageing characteristics. Casati Milano produces bespoke straps for the Polaris 9028180 with an 18-month warranty on manufacturing defects.

A high-quality strap, vegetable-tanned, lasts 5–8 years under daily wear, depending on sun exposure, humidity and washing frequency. The natural patina that develops is a desired characteristic, not a defect. Replacing the stretched final holes of the strap and gentle cleaning with specific leather care products can extend longevity further.