Jaeger-LeCoultre Q114842J Master Ultra Thin Perpetual Calendar Stainless Steel Silver Dial Watch

Jaeger-LeCoultre Master Ultra Thin Perpetual Calendar – Ref. Q114842J

The Jaeger-LeCoultre Master Ultra Thin Perpetual Calendar Ref. Q114842J is a masterpiece of precision and elegance. Offered in stainless steel, this 39 mm dress watch houses a perpetual calendar complication in an ultra-thin profile. With its refined sunray silvered dial, dauphine hands, and 70-hour power reserve, it is an exemplary fusion of craftsmanship, technical sophistication, and wearable luxury.

Case Dimensions

The polished case is made of stainless steel, sized at 39 mm in diameter with a thickness of 9.2 mm, striking a balance between presence and wearability. Elongated, refined lugs improve fit on the wrist, making this timepiece both distinctive and comfortable. Water resistance is rated at 5 bar (~50 meters), sufficient for everyday wear while maintaining its dress-watch elegance.

Dial Display – Silvered Sunray Elegance

The dial features a silver-sunray finish, offering subtle, radiant reflections under light. It shows the perpetual calendar layout with date at 3 o’clock, day of the week at 9 o’clock, and month at 6 o’clock. A moon-phase indicator is placed at 12 o’clock. Applied hour markers are elongated and dauphine hands are double polished and satin finished, enhancing legibility and aesthetic refinement. Minute-track dots flank the edge for precise time reading.

Movement – Calibre 868

Underneath, the movement is the in-house Jaeger-LeCoultre Calibre 868/1, an automatic winding perpetual calendar calibre. This movement powers all calendar functions including day, date, month, moon phase, and year, plus a “red security zone” to protect the movement during sensitive hours. It delivers a generous 70-hour power reserve, beats at 28,800 vph (4 Hz), and is impressively slim at 4.72 mm thickness.

Strap Wearability

The Q114842J comes with an alligator leather strap (black standard, optional colors vary) with a double-folding stainless steel buckle. Lug width is 21 mm. Lengths are approximately 75 mm on the 12 o’clock side and 120 mm on the 6 o’clock side. The strap is interchangeable. The carefully designed proportions (39 mm / 9.2 mm) and refined lugs make it elegant without being overly large — perfect under cuffs and evening wear.

Key Technical Specifications

• Reference: Q114842J
• Case Material: Stainless Steel
• Diameter: 39 mm
• Thickness: 9.2 mm
• Water Resistance: 5 bar / 50 meters
• Dial: Silvered sunray-brushed, with applied hour markers
• Hands: Dauphine, polished / satin finish
• Movement: Calibre 868/1 automatic perpetual calendar, moon phase, year indicator, 70-hour power reserve
• Strap: Alligator leather, 21 mm lug width, stainless steel buckle

What Makes Q114842J Unique

• Ultra-thin perpetual calendar: Despite the complexity of calendar, moon-phase, and year function, it maintains an elegant 9.2 mm thickness.
• Red security zone: Adds protection when setting calendar indicators during hours when movement is vulnerable. A thoughtful functional safeguard.
• Upgraded power reserve: 70 hours is a significant improvement over past iterations, giving more autonomy and convenience.
• Refined design tweaks: Slimmer, elongated lugs and slightly narrower markers give a cleaner, more modern aesthetic over prior versions.

Conclusion

The Jaeger-LeCoultre Master Ultra Thin Perpetual Calendar Ref. Q114842J is a benchmark in the dress-watch category. With its classic silvered dial, timeless steel case, ultra-thin perpetual calendar movement and elevated power reserve, it delivers both heritage and modern refinement. Ideal for collectors seeking elegance and mechanical sophistication in one elegant presentation.