TWA Factory Jaeger-LeCoultre Master Geographic Q1428421 V2 42mm
The TWA Factory Jaeger-LeCoultre Master Geographic Q1428421 V2 is a 42mm automatic mechanical watch featuring a multi-function dial with date, second time zone, and power-reserve indications.
This upgraded V2 version uses a Cal.939A automatic mechanical movement with an updated movement-axis configuration and a rose-gold-tone edge around the automatic rotor.
The watch is housed in a 316L stainless steel case and combines its travel-oriented dual-time display with the traditional round-case architecture of the Master collection.
42mm Stainless Steel Case
The Master Geographic Q1428421 uses a 42mm case manufactured from 316L stainless steel.
The relatively large dial area provides sufficient space to separate the multiple indications without concentrating all of the information around the central hands.
This is particularly important for the Geographic layout because the watch incorporates conventional timekeeping together with date, second-time-zone, and power-reserve information.
Multi-Function Geographic Dial
The dial is organized around several independent indications rather than a conventional three-hand layout.
Its principal functions include:
* Hours
* Minutes
* Seconds
* Date
* Second time zone
* Power reserve
Each function occupies a defined area of the dial, allowing the additional information to remain visually separated from the primary time display.
Dual Time Zone Display
One of the defining functions of the Master Geographic is its dual-time-zone display.
The second-time-zone indication allows another local time to be referenced alongside the primary time.
This makes the Geographic configuration mechanically and functionally different from simpler Master-series models that provide only conventional hours, minutes, seconds, and date.
Date Display
The dial incorporates a dedicated date indication.
Rather than using only a conventional date aperture, the calendar information forms part of the broader multi-function layout.
The date function operates alongside the dual-time and power-reserve indications without replacing the primary central time display.
Power Reserve Display
A dedicated power-reserve indicator provides information about the remaining stored energy of the mechanical movement.
This allows the wearer to see approximately how much operating reserve remains before the movement requires additional winding.
The power-reserve indication is therefore both a functional complication and an important visual component of the Geographic dial architecture.
Cal.939A Automatic Movement
The V2 version is equipped with a Cal.939A automatic mechanical movement.
The movement drives the conventional time display together with the date, second-time-zone, and power-reserve functions.
Automatic winding allows normal wrist movement to provide energy to the mechanical movement during regular wear.
V2 Movement Updates
The supplied V2 specification introduces several movement-related changes compared with the previous configuration.
The movement-axis structure has been updated, while the automatic rotor incorporates a rose-gold-tone perimeter detail.
The movement also receives decorative surface finishing that is visible as part of its overall mechanical presentation.
These details provide useful identifiers when distinguishing the V2 movement configuration from earlier TWA versions.
Rose-Gold-Tone Rotor Detail
The automatic winding rotor incorporates a rose-gold-tone edge.
This creates a visible contrast between the rotor and the surrounding movement components.
Rather than affecting the timekeeping functions themselves, this feature forms part of the visual finishing of the Cal.939A movement.
Dial Surface Detail
The dial incorporates visible surface texture that provides additional depth beneath the multiple functional indications.
This is particularly relevant on a complicated dial because differences in surface treatment help visually separate the central time display from the surrounding calendar, dual-time, and power-reserve information.
Folding Clasp
The watch is fitted with a folding clasp.
The folding construction provides a secure closure while reducing the repeated bending normally associated with a conventional pin-buckle arrangement.
Technical Specifications
Specification Details
Factory TWA Factory
Version V2
Brand Jaeger-LeCoultre
Collection Master Geographic
Reference Q1428421
Case Diameter 42mm
Case Material 316L Stainless Steel
Movement Cal.939A
Movement Type Automatic Mechanical
Primary Time Hours / Minutes / Seconds
Date Yes
Second Time Zone Yes
Power Reserve Display Yes
Rotor Detail Rose-Gold-Tone Edge
Movement Update Updated Axis Configuration
Clasp Folding Clasp
Geographic Function Architecture
The most important characteristic of the Q1428421 is the combination of several practical indications within a single mechanical layout.
The second-time-zone display provides an additional time reference, while the date indication adds calendar information and the power-reserve display shows the remaining stored energy of the movement.
These functions operate alongside the primary time display rather than replacing it.
This gives the Master Geographic a distinctly different dial architecture from conventional Master-series three-hand watches.
V2 Version Characteristics
For this TWA V2 configuration, the most useful identifiers are the Cal.939A movement, updated movement-axis structure, rose-gold-tone rotor edge, 42mm 316L stainless steel case, dual-time display, date indication, and power-reserve display.
These specific characteristics should be used when distinguishing this V2 release from earlier TWA configurations rather than relying on general promotional descriptions.
Wearing and Care
The 42mm case provides more dial space for the Geographic’s multiple indications and gives the watch a larger wrist presence than many traditional dress-oriented Master models.
Because the watch incorporates multiple mechanical functions, adjustments should be performed gently. Do not force the crown or other adjustment mechanisms if unusual resistance is encountered.
Strong impacts and powerful magnetic fields should also be avoided.
Frequently Asked Questions
What is the reference number of this TWA Master Geographic?
The supplied reference is Q1428421.
What is the case size?
The watch has a 42mm case.
What material is used for the case?
The case is manufactured from 316L stainless steel.
What movement does the TWA V2 version use?
The V2 configuration uses a Cal.939A automatic mechanical movement.
Does the watch display two time zones?
Yes. The Master Geographic incorporates a second-time-zone display alongside the primary time.
Does it have a date function?
Yes. A date indication is incorporated into the multi-function dial.
What does the power-reserve indicator show?
It provides a visual indication of the remaining stored energy of the mechanical movement.
What changed on the V2 movement?
The supplied V2 specification includes an updated movement-axis configuration together with revised movement presentation.
What is different about the automatic rotor?
The automatic rotor incorporates a rose-gold-tone perimeter detail.
What type of clasp does this version use?
The watch is fitted with a folding clasp.
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