Polaris Mariner Date 42mm Gradient Blue

The Story

The Jaeger-LeCoultre Polaris collection traces its historic lineage directly back to 1968, when the maison launched the Memovox Polaris: a legendary mechanical alarm dive watch that defined mid-century utilitarian luxury. The contemporary Polaris Mariner Date (Ref. Q9068180) represents the absolute peak of high-performance aquatic engineering within this lineage. Certified under strict ISO 6425 professional diving standards, it elevates the classic Polaris silhouette with genuine deep-sea capabilities, replacing conservative dress-sports layouts with an intensely charismatic, high-visibility gradient aesthetic designed for the purist who demands "Watchmaker of Watchmakers" pedigree under extreme conditions.

The Craft: Gradient Depth & The 70-Hour Manufacture Calibre

The 42mm stainless steel case showcases brilliant ergonomics, pairing alternating satin-brushed profiles with mirror-polished lugs. The upper crown operates the internal rotating dive bezel, featuring a clever orange safety collar that alerts the diver if the crown is not fully screwed down before entering the water.

The gradient blue dial is a study in depth, utilizing three distinct concentric textures (sunray center, grained middle ring, and opaline outer track) that shift from a rich royal azure in the center to a deep midnight black along the edge. The trapezoidal indices and hands are filled with Super-LumiNova for high-contrast legibility, complemented by a date aperture at 3 o'clock.

Beneath the dial beats the upgraded In-house JLC Calibre 899. Visible through a sapphire exhibition caseback, a rare feature for a true 300m dive watch, this automatic movement operates with supreme chronometric stability and delivers an extended 70-hour power reserve. Backed by twin crown seals and a heavy-duty steel architecture, the watch supports a professional rating of 300 meters (1,000 feet).

Condition & Extended 2030 Factory Warranty Set

This collector-grade Polaris Mariner Date is presented in Very Good overall condition, maintaining crisp factory bevels along its steel case flanks. The sapphire crystal is immaculate, and the integrated steel bracelet (fitting wrists up to 19 cm) exhibits only honest, light hairline marks from careful occasional wear.

The timepiece arrives with its original Jaeger-LeCoultre presentation box and original official purchase receipt. Registered under the official JLC Care Program, it benefits from an active extended factory warranty valid until January 2030 (fully claimable via the maison with the included purchase receipt). (Please note: The warranty card and manual are omitted; the watch is priced accordingly and fully backed by factory status). Fully verified for timing precision and water tightness, this 300m blue reference is an outstanding turn-key sports companion.