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.