Carrying the Reserve de Marche complication, this replica ultra thin master blue dial version channels the dressy-utilitarian balance that defines the Master Ultra Thin line. The blue sunburst dial pairs with a power reserve indicator at the six-o’clock position, giving you a practical readout without cluttering the face. Most Reserve de Marche references sit at 39mm in stainless steel, keeping the overall profile slim enough for a dress shirt cuff. The date aperture at three o’clock rounds out the functional layout.

Case & Movement Specs

• Case diameter: 39mm
• Case material: stainless steel
• Dial: blue sunburst with power reserve display
• Crystal: sapphire with anti-reflective coating
• Functions: hours, minutes, seconds, date, power reserve indicator
• Movement: automatic
• Strap: leather with pin buckle

The power reserve gauge uses a sector display rather than a traditional hand, which is a hallmark of how Jaeger-LeCoultre integrates complications without sacrificing legibility. At full wind the indicator sits near the top of its arc, dropping gradually over the next forty-plus hours.

Caliber Breakdown

What separates the Reserve de Marche from a standard time-and-date watch is the mainspring tension readout routed to the dial. The automatic winding system feeds a barrel whose remaining energy gets translated to that sector display in real time. It is a complication that appeals to anyone who wants more information from their watch without stepping into chronograph or moon phase territory. For a broader look at this family, browse our Ultra Thin Master collection. If pure time-only appeals to you instead, the 1362511 39mm version strips the dial back to essentials while keeping the same slim case profile. Both share DNA, but the power reserve transforms the wearing experience by adding a layer of mechanical feedback.

How It Compares

Against standard Ultra Thin Master references, the Reserve de Marche trades a cleaner dial for genuine utility. You see the power state at a glance, something even many higher-priced competitors skip. The blue dial adds contrast that photographs well and shifts between deep navy and electric blue depending on lighting. This replica ultra thin master blue dial Reserve de Marche puts wrist presence and practical complication into a single slim package.