Watch Review: ZF Factory Jaeger-LeCoultre Master Ultra Thin Date Series 1238420 Watch

Hello everyone, this is Bokey Watch Industry. In this watch review, we will be discussing the ZF Factory Jaeger-LeCoultre Master Ultra Thin Date formal watch, with the official model number Q1238420. This model corresponds to the original 2019 new version. Compared to the older Master Ultra Thin Date models, the new version features the addition of the “AUTOMATIQUE” font on the dial, slimmer hour markers, and the JL brand logo has been changed from a flat print to a metal logo. Below, through real-shot image reviews, we will discuss the specific craftsmanship details and simulation accuracy of the ZF Factory Master Ultra Thin Q1238420 replica watch, and examine its advantages and disadvantages.

Overall, the ZF Factory Jaeger-LeCoultre Master Ultra Thin Q1288420 watch features a simple and elegant dial. The silver sunburst dial paired with elegant Breguet-style hands creates a classic dress watch configuration, highlighting its refined aesthetic. The dial design incorporates a large three-hand display with a date window, and the seconds hand is made of blued steel. The 12 applied hour markers (matching the original craftsmanship) are incredibly charming and translucent under natural light, maximizing the wearer’s captivating charm.

The overall workmanship is very capable and exquisite, and the position of the literal metal nails and the balance line will be done well, and the position of small manufacturers is most likely to be misaligned or crooked.

The radial pattern on the surface of the plate is also very delicate.

It is worth mentioning that the ZF Jaeger-LeCoultre Master Ultra Thin Date uses “yin-yang” hands. The so-called yin-yang hands refer to the symmetrical design at both ends of the hands, which adopt different surface treatment processes—usually half-brushed and half-polished. The design of hand aesthetics has always been a key focus for major watch brands. ZF Factory has always been meticulous in watch manufacturing and has also invested significant effort in the design of hands. The Breguet-style hands with one polished side and one brushed side are exquisitely crafted, a level of detail that small factories in the market generally fail to achieve. Small factories typically only perform direct polishing in one step to save time and labor. Therefore, the ZF Master Ultra Thin series achieves overall perfection by paying meticulous attention to every detail of the watch.

The Jaeger-LeCoultre brand logo below 12 o’clock has also been changed from the old flat printing to a metal logo, and it has been polished, which is very textured in the light.

The ends of the minute and second hands are curved downward

The calendar window is very centered, and there are small steps, and the font is also synchronized with the genuine.

In terms of dimensions, the authentic model measures 39*7.8mm, while the ZF Factory Master Ultra Thin replica version, as actually measured by Bokey, is 39*8.9mm, with a thickness difference of 1.1mm from the authentic model.

The case is made of 316L stainless steel, and the thickness of the case can be seen from the side is also relatively thin, although there is a 1.1 mm gap with the original, but if you do not use a measuring tool, you can’t tell the difference in thickness only from the naked eye, and you don’t have to worry too much.

On the other side is the timing handle, with a three-dimensional relief of JL on top. Here is a brief description of the function, directly twisting up is the winding up, opening the first gear to adjust the calendar, and the second gear to adjust the time.

The back is transparent, allowing you to see through the back of the watch the movement inside.

In terms of movement, it is equipped with a customized version of the Jaeger-LeCoultre calibre CAL.899 developed by the Dandong factory, which provides a power reserve of 70 hours. The simulation degree of the appearance of the movement can only be said to be 80% recognizable, of course, the movement is generally not visible without taking off the watch.

The strap is made of black calfskin with crocodile patterns, and friends who pursue the ultimate experience can also find Bokey to upgrade the crocodile belt.

In terms of buckle, it is the classic Jaeger-LeCoultre stainless steel folding buckle, which is delicately polished, clearly lettered, and has the Jaeger-LeCoultre logo on the buckle!

Summary: The ZF Factory’s Jaeger-LeCoultre Master Ultra Thin Date Q1238420 replica watch demonstrates a high degree of authenticity in front-facing details. However, it falls slightly short in terms of thickness and the appearance of the movement. If you can accept these shortcomings, it may be worth adding to your collection.