Longines - Saint-Imier - L2.784.4 - Men - 2010-2020

Longines Saint-Imier Collection L2.784.4 – 43 mm – automatic chronograph – black dial – date – caliber L688 – circa 2012–2015

The Longines Saint-Imier Collection L2.784.4 is a stylish automatic chronograph that combines the classic look of Longines with a sporty complication. This version features a 43 mm stainless steel case, a deep black dial with three registers, date display, and a transparent case back that reveals the automatic chronograph movement.

The black dial is characterized by the large applied Arabic “12,” facetted hour markers, luminous central hands, and contrasting white scale markings. The three registers are clearly laid out across the dial and give the watch its distinctive chronograph appearance.

The watch is equipped with a black Longines leather strap and a signed Longines folding clasp.

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Basic information

Brand: Longines
Collection: Saint-Imier Collection
Reference: L2.784.4
Estimated year: circa 2012–2015
Type: automatic chronograph
Movement: mechanical automatic
Caliber: Longines L688
Frequency: 28,800 A/h
Functions: hours, minutes, small seconds, chronograph and date
Case diameter: 43 mm
Case material: stainless steel
Dial: black
Glass: sapphire crystal
Back: transparent case back
Bracelet: black Longines leather strap
Clasp: Longines folding clasp
Crown: signed Longines crown
Water resistance according to model specification: 3 bar / 30 meters
Origin: Swiss Made

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Key details

Black chronograph dial
Three separate registers
Large applied Arabic “12”
Facetted steel hour markers
Luminous central hour and minute hands
Central chronograph second hand
Date window between 4 and 5 o’clock
Fine minute and second scale along the outer edge
Longines logo and winged hourglass emblem
“Automatic” inscription
Two chronograph pushers
Signed Longines crown
43 mm stainless steel case
Transparent case back
Automatic Longines chronograph caliber
Black Longines leather strap
Signed Longines folding clasp

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Year of manufacture

Estimated year: circa 2012–2015

This Saint-Imier belongs to the modern generation of mechanical Longines watches, in which the brand’s traditional, elegant styling was combined with a relatively stout case and an automatic chronograph.

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Case

The round case is made of stainless steel and has a diameter of 43 mm.

The case is largely high-polish finished and features the characteristic lugs that flow smoothly from the middle section to the strap. The slim polished bezel ensures that a large portion of the front is taken up by the dial, giving the watch a strong wrist presence.

On the right side are the large knurled crown and two separate chronograph pushers.

The case is in neat used condition. There are light superficial signs of wear and small scratches consistent with normal use. The lines and shapes of the case are well preserved and there are no obvious heavy damages.

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Dial

The black dial provides a strong contrast with the silvery markers, light hands, and white scale markings.

At 12 o’clock there is a large applied Arabic “12.” The other hours are mainly indicated by elongated, faceted index markers.

The central hour and minute hands are fitted with a light luminescent fill. The long central hand belongs to the chronograph function.

Along the outer edge of the dial runs a detailed minute/second scale. Additional five-minute numerals emphasize the instrument-like character of the chronograph.

Below 12 o’clock are the Longines name, the winged hourglass emblem, and the elegantly scripted “Automatic.”

At the bottom of the dial reads “SWISS MADE.”

The dial is in neat condition with a well-kept, high-contrast appearance.

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Chronograph

The watch features a mechanical chronograph function with three registers.

Register at 3 o’clock: 30-minute chronograph counter.
Register at 6 o’clock: 12-hour chronograph counter.
Register at 9 o’clock: small seconds for normal time display.

The long central second hand is used for measuring chronograph elapsed seconds.

The chronograph is operated with the two rectangular pushers on the right side of the case. The placement of the three registers creates a balanced, sporty layout without losing the watch’s classic character.

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Date

The date window is located roughly between 4 and 5 o’clock.

The date is displayed with dark numerals on a light background and has a clear frame, keeping it easily readable against the black dial.

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Movement

The watch is equipped with an automatic mechanical Longines chronograph movement from the L688 family.

Caliber: Longines L688
Type: mechanical automatic
Frequency: 28,800 A/h
Functions: hours, minutes, small seconds, chronograph and date
Winding: automatic via rotor

The movement is visible through the sapphire display back.

The rotor bears the Longines signature and the familiar winged hourglass logo. Several movement parts are decorated, giving the back of the watch an attractive mechanical look as well.

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Timegrapher measurement

Rate deviation: -2 seconds per day
Amplitude: 313°
Beat error: 0.0 ms
Lift angle: 52.0°
Frequency: 28,800 A/h

These values reflect the performance of the movement during the performed measurement. A timegrapher reading is a snapshot and does not constitute a warranty for future accuracy or the technical maintenance state of the movement.

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Back

The Saint-Imier features a transparent case back, allowing the automatic mechanical movement to be visible.

Around the viewing window are various engravings, including:
THE LONGINES SAINT-IMIER COLLECTION
SWISS MADE
WATER-RESISTANT

Due to the combination of the polished steel edge, the visible movement, and the signed rotor, the back also presents a refined and high-quality appearance.
The steel parts of the back show light signs of use.

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Crown and chronograph pushers

The large knurled crown is engraved with the Longines name and the winged hourglass logo.
Above and below the crown are the two polished chronograph pushers. The rounded rectangular shape of the pushers complements the flowing lines of the case.

Crown and pushers are in neat used condition with light normal signs of wear.

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Band

The watch comes with a black Longines leather strap with an alligator/crocodile texture.
The inner side reads:
LONGINES
Winged hourglass logo
22
GENUINE LEATHER

The band shows clear wear. Around the lugs and holes there are signs of wear, creasing and abrasion. The inner side also shows wear consistent with normal use.

The strap’s black color and classic texture suit the black chronograph dial well.

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Clasp

The leather strap is fitted with a signed Longines folding clasp.
The polished clasp bears the Longines name and the winged hourglass logo.
The clasp shows light superficial signs of wear but remains neatly presented.

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Wrist size

The current band configuration fits a wrist of approximately 20 cm.

With the various holes on the leather strap, the fit can be adjusted within a certain margin.

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Condition

Case: neat used condition with light superficial signs of wear
Bezel: neat condition with light signs of wear
Dial: neat and well-kept
Crystal: clear and neat
Hour markers: neat
Hands: neat
Crown: signed Longines crown
Chronograph pushers: neat used condition
Back: light normal signs of wear
Movement: automatic Longines chronograph movement
Band: black Longines leather strap with clear signs of wear
Clasp: signed Longines folding clasp with light signs of wear
Wrist size: approx. 20 cm in current configuration

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Overall condition

This Longines Saint-Imier Collection L2.784.4 is in neat used condition. The 43 mm stainless steel case shows light signs of wear consistent with normal wear, while the black dial and crystal give a well-maintained impression.

The combination of the substantial 43 mm case, black dial, three chronograph registers, large applied “12,” date display, and transparent case back provides this Saint-Imier with a nice balance between classic Longines design and sporty chronograph styling.

The black Longines leather band is clearly worn and shows wear around the lugs. The signed Longines folding clasp is still neat and completes the set.

During the timegrapher measurement a rate deviation of -2 seconds per day was recorded, with an amplitude of 313° and a beat error of 0.0 ms.