Jaeger-LeCoultre Master Ultra Thin Moon Ref. Q136250

The Jaeger-LeCoultre Master Ultra (Ref. Q136250) represents exceptional Swiss horological craft, uniting refined case proportions, robust precision engineering, and distinctive dial architecture. Presented in verified brand new / unworn condition, this distinguished timepiece exemplifies Jaeger-LeCoultre’s commitment to enduring quality, ergonomic wrist presence, and unmistakable mechanical distinction.

Jaeger-LeCoultre Master Ultra Architecture & Case Construction

Crafted in high-grade Stainless Steel, the exterior geometry of the Jaeger-LeCoultre Master Ultra balances assertive sport-luxury contours with tailored elegance. The case measures Standard in diameter, engineered with precise multi-angled beveling, alternating brushed and mirror-polished surfaces, and durable case seals designed to withstand daily environmental exposure. A scratch-resistant sapphire crystal with anti-reflective coating protects the multi-dimensional dial, ensuring pristine legibility in diverse lighting environments.

Every ergonomic detail on the case profile and bracelet integration has been engineered for all-day comfort. The winding crown functions smoothly with dual-gasket protection, maintaining dependable water resistance across varying atmospheric pressures. Beneath the sapphire crystal, hand-applied faceted hour markers and precision-finished hands provide intuitive readability at a glance.

The solid caseback construction protects sensitive balance assembly components against ambient magnetic fields and everyday micro-vibrations. Precision-fitted lug interfaces secure either a supple leather strap or solid link bracelet, fastened by an ergonomically sculpted deployment clasp for maximum security on the wrist.

High-Precision Movement Engineering

At the mechanical heart of this Jaeger-LeCoultre Master Ultra beats an advanced Swiss mechanical caliber calibrated to stringent timing tolerances. Incorporating high-efficiency escapement components, temperature-compensating balance spring metallurgy, and shock-resistant jewel bearings, the movement provides dependable amplitude and generous power reserve. The regulation conforms with Fondation de la Haute Horlogerie heritage register standards, verified across multiple positions on digital timing instruments in our horology atelier.

The caliber plates and bridges are decorated with classical Geneva ribbing, circular perlage, and chamfered edges, reflecting centuries of Swiss artisanal mastery. High-tolerance gear trains and friction-minimizing synthetic rubies deliver consistent torque delivery across the entire power reserve curve.

Verified Technical Specifications — Ref. Q136250

Each movement is electronically verified on multi-axis Witschi timing equipment to confirm optimal beat rate, minimal beat error, and stable power transfer throughout its reserve cycle.

30-Point Horological Verification & Insured US Delivery

Prior to listing in our vault, this Jaeger-LeCoultre Master Ultra successfully completed our rigorous 30-Point Horological Verification Protocol. Master watchmakers microscopically authenticate case serial engravings, caliber bridge markings, escapement health, and water-resistance integrity. Any previous consignment history is verified against international registry databases for total provenance assurance.

Collector Frequently Asked Questions

What guarantee and warranty protections are included with this watch?
Every Jaeger-LeCoultre Master Ultra purchase from Luxury Time Hub includes our comprehensive 1-Year In-House Mechanical Movement Warranty and a 14-day client examination window. If you are not completely satisfied, return the watch in its original unworn state for a prompt resolution.

How is my shipment handled and insured within the United States?
Orders ship complimentary via fully insured express armored courier with adult signature verification required upon delivery. Luxury Time Hub is an independent luxury watch specialist and is not an authorized retailer for Jaeger-LeCoultre.

Does this timepiece include its full box and papers set?
Inquire directly with our concierge team to confirm the complete factory presentation set, warranty cards, and archive documentation included with this specific reference.

Product specifications

Delivery Options

We offer a range of delivery options to suit your needs. Please check the details at the top of the page for this product’s specific delivery options.

Free Express Delivery (7 Days a Week)Free for orders over £200. For orders under £200, a £4.95 delivery charge applies.Express delivery is available on all items, everything that is immediately available and ordered by 9pm (Monday to Sunday) will be delivered the following day. You are shown during the checkout whether this option is available for your order. Orders received by 9pm (Monday to Sunday) may be delivered the following day, but this cannot be guaranteed.

Special Orders– Special orders are products with an extended lead time. Lead time information is displayed on the product page and in the shopping bag. This denotes the amount of time between taking your order and it’s estimated date of dispatch.