LGS Factory Longines L2.773.4 Eight-Hand Moonphase 40mm
The LGS Factory Longines L2.773.4 is a 40mm multi-function mechanical watch combining an eight-hand display, moonphase indication, blued steel hands, and a 7751-based automatic mechanical movement.
The watch uses a 316L stainless steel case and bracelet, while the movement incorporates blue-finished components, an openworked automatic rotor, and an approximate 48-hour power-reserve specification.
With its combination of calendar information, moonphase display, and mechanical functions, the L2.773.4 has a considerably more complex dial architecture than a conventional three-hand watch.
40mm 316L Stainless Steel Case
The watch uses a 40mm 316L stainless steel case.
The case is formed using a pressure-forming process, followed by CNC machining and engraving for the detailed exterior components.
At 40mm, the case provides sufficient dial area for the multi-function layout while maintaining relatively traditional proportions.
Eight-Hand Multi-Function Display
The defining characteristic of the L2.773.4 is its eight-hand multi-function layout.
Multiple indications are integrated across the dial, creating a layered display with significantly more information than a standard hour-minute-seconds configuration.
The additional hands and subdial indications work together with the moonphase display to establish the model’s distinctive mechanical character.
Moonphase Display
A moonphase display forms one of the central visual features of the dial.
The moonphase disc incorporates gold-tone detailing, creating a strong visual contrast against the surrounding indications.
Its position within the multi-function dial adds another layer to the calendar-oriented mechanical presentation of the watch.
Heat-Blued Steel Hands
The dial uses heat-blued steel hands.
The blue finish provides strong visual separation from the dial and helps organize the multiple indications found across the eight-hand layout.
Because this model incorporates numerous hands and displays, the blue coloration also contributes to overall readability while retaining a traditional mechanical-watch appearance.
7751-Based Automatic Mechanical Movement
The L2.773.4 is powered by a 7751-based automatic mechanical movement configured for its multi-function display and moonphase indication.
Its supplied power-reserve specification is approximately:
48 hours
The automatic winding system uses normal wrist movement to provide energy to the movement during wear.
Blue-Finished Movement Components
The movement incorporates blue-finished wheel components, adding a contrasting mechanical detail to the visible movement architecture.
These blue elements complement the blued hands visible from the dial side and create a consistent design theme between the front display and movement.
Openworked Automatic Rotor
The automatic movement uses an openworked rotor design.
Removing material from sections of the rotor creates a more open appearance and allows additional movement components underneath to remain visible.
The rotor remains part of the automatic winding system while also contributing to the visual presentation of the movement.
100-Meter Water-Resistance Specification
The watch carries a 100-meter water-resistance specification.
As with any mechanical watch intended for regular exposure to water, the sealing condition of an individual watch should be pressure-tested before intentional or repeated swimming or water use.
316L Stainless Steel Bracelet
The watch is paired with a 316L stainless steel bracelet.
Individual bracelet components are cut and finished before assembly, creating a structured metal bracelet that complements the 40mm stainless steel case.
The steel construction also gives the watch a more substantial wrist presence than leather-strap configurations.
Technical Specifications
Specification Details
Factory LGS Factory
Brand Longines
Reference L2.773.4
Case Diameter 40mm
Case Material 316L Stainless Steel
Display Eight-Hand Multi-Function
Moonphase Yes
Hands Heat-Blued Steel
Moonphase Disc Gold-Tone Detail
Movement 7751-Based
Movement Type Automatic Mechanical
Power Reserve Approx. 48 Hours
Movement Detail Blue-Finished Components
Rotor Openworked Automatic Rotor
Water Resistance 100m Specification
Bracelet 316L Stainless Steel
Multi-Function Dial Architecture
The L2.773.4 is distinguished primarily by the amount of mechanical information incorporated into its dial.
Rather than relying on a simple three-hand arrangement, the watch combines eight hands with multiple indications and a moonphase display.
The heat-blued hands provide color separation across the complex dial, while the gold-tone moonphase detail creates an additional visual focal point.
This combination gives the L2.773.4 a distinctly traditional multi-complication appearance despite its 40mm case proportions.
Wearing and Care
The 40mm stainless steel case offers balanced dimensions for a watch carrying a relatively complex multi-function display.
Because the 7751-based movement controls several indications, calendar and moonphase adjustments should be performed carefully. Avoid forcing the crown or adjustment mechanism if resistance is encountered.
Strong impacts and powerful magnetic fields should also be avoided.
For intentional or repeated exposure to water, individual pressure testing is advisable to confirm the sealing condition of the specific watch.
Frequently Asked Questions
What is the case size of the LGS Longines L2.773.4?
The watch has a 40mm 316L stainless steel case.
What movement does the L2.773.4 use?
It uses a 7751-based automatic mechanical movement configured for the multi-function and moonphase display.
What is the power reserve?
The supplied power-reserve specification is approximately 48 hours.
Does the watch have a moonphase display?
Yes. The watch incorporates a mechanical moonphase indication with gold-tone detailing on the moonphase disc.
What does eight-hand mean on this model?
The dial uses an eight-hand multi-function configuration, allowing several indications to be displayed across the main dial and subdials.
Are the blue hands painted?
The supplied specification describes the hands as heat-blued steel hands.
What material is used for the case and bracelet?
Both the case and bracelet are made from 316L stainless steel.
What is the water-resistance specification?
The watch carries a 100-meter water-resistance specification. Individual pressure testing is advisable before intentional or repeated water exposure.
Does the movement have an automatic rotor?
Yes. The 7751-based movement uses an openworked automatic rotor as part of its winding system.
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