This JLC Master Ultra Thin replica is the perpetual calendar version of the line, in a pink gold case with a white dial: day of the week at nine, date at three, month and year at six, moon phase at twelve. The 39mm pink gold case keeps the proportions squarely in dress-watch territory, thin enough to disappear under a cuff yet large enough to read all four calendar indications without effort. The dial works in two tones rather than three: applied gold baton markers pick up the color of the case, and only the blued central seconds hand steps outside that pairing. Keeping the markers slim is what leaves room for a full calendar without the face turning into clutter.

Key Specifications

• Case diameter: 39mm
• Case material: pink gold
• Dial: white with applied gold baton markers
• Crystal: sapphire with anti-reflective treatment
• Hands: dauphine, polished finish, with a blued central seconds hand
• Movement: clone Cal. 868, automatic, 28,800 vph
• Power reserve: 40 hours (genuine Cal. 868: 43 hours)
• Water resistance: 50 m (same as genuine)
• Functions: hours, minutes, central seconds, perpetual calendar – day of the week at 9, date at 3, month and year at 6, moon phase at 12

There is no date window on this watch. The full model name is Jaeger-LeCoultre Master Ultra Thin Perpetual Calendar, sold here under the shorter listing name Master Ultra Thin 39mm White Dial, and the date is carried on the register at three o’clock rather than in an aperture at six. A perpetual calendar stores the length of every month and the four-year leap cycle, so the display runs through February and the thirty-day months on its own. A plain date watch asks for that correction five times a year.

Design & Finishing

White dials demand precision in finishing because every surface imperfection shows, and four calendar indications give imperfection four more places to appear. On this Master Ultra Thin super clone the calendar printing stays thin and even, and the hour markers are applied gold rather than printed on. Describing the Master Ultra Thin line as elegance in place of complications does not fit this model, which carries a full calendar under the same flat profile. For a direct comparison within the range, the 1548420 reference offers a different dial configuration on the same 39mm platform. Both sit within the Master Control lineup, sharing case dimensions while diverging in aesthetic direction.

On the Wrist

Pink gold against a white dial puts this one at the warm end of the line, a different register entirely from the steel-and-black version of the same calendar. The 39mm diameter sits comfortably on wrists between 16 and 19 centimeters without looking oversized. The strap is brown alligator with a pin buckle, which keeps the case metal and the leather in the same warm family instead of setting up a contrast. One habit comes with the calendar: keep this JLC Master Ultra Thin replica wound or on a winder, because a perpetual calendar that runs down has to be reset across all four indications before it is right again.

If a full calendar is more dial than you want, the other calendars and complications in the range step down to a moon phase, a power reserve or a plain date. Our guide covers how the gold references compare across the brand once the complication is set aside.

Specifications

• Model: Jaeger-LeCoultre Master Ultra Thin Perpetual Calendar, 39mm
• Reference: no reference in the product title; listed as Master Ultra Thin 39mm White Dial
• Case: pink gold
• Case size: 39 mm
• Dial: white, applied gold baton markers, blued central seconds hand
• Complications: perpetual calendar – day of the week at 9, date at 3, month and year at 6, moon phase at 12
• Movement: clone Cal. 868, automatic, 28,800 vph
• Power reserve: 40 hours (genuine Cal. 868: 43 hours)
• Water resistance: 50 m (same as genuine)
• Crystal: sapphire
• Strap: brown alligator with pin buckle