Longines - Master Collection - L2.708.4.51.6 - Men - 2010-2020

Longines Master Collection L2.708.4.51.6 – 38.5 mm – automatic – power reserve – date – black dial – steel bracelet

An elegant Longines Master Collection with reference L2.708.4.51.6, made in stainless steel and featuring a characterful black textured dial. This version combines classical Roman numerals and feuille hands with a practical power-reserve indicator at 6 o’clock and date display at 3 o’clock.

The watch is powered by the automatic Longines caliber L602, based on the ETA 2897. Through the transparent case back the decorated Longines rotor is visible.

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Basic information

Brand: Longines
Collection: The Longines Master Collection
Reference: L2.708.4.51.6
Case diameter: 38.5 mm
Case material: stainless steel
Dial: black, textured
Hour marks: Roman numerals
Glass: sapphire crystal
Movement: automatic mechanical
caliber: Longines L602
Base movement: ETA 2897
Frequency: 28,800 vibrations per hour
Jewels: 21
Power reserve: approx. 42 hours
Functions: hours, minutes, central seconds, date and power-reserve indicator
Case back: transparent case back with sapphire crystal
Bracelet: Longines stainless steel bracelet
Clasp: Longines folding clasp with pushers
Water resistance according to model specifications: 3 bar / 30 meters

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Important details

– 38.5 mm stainless steel case
– Black textured dial
– Large contrasting Roman hour markers
– Silvery white feuille hands
– Central seconds hand
– Date window at 3 o’clock
– Power-reserve indicator at 6 o’clock
– Automatic Longines caliber L602
– Approximately 42 hours power reserve
– Sapphire crystal
– Transparent case back
– Longines stainless steel bracelet and signed folding clasp
– Signed Longines crown
– Current timegrapher measurement available

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Estimated year of production

Estimated production year: circa late 2000s to first half of the 2010s.

The Master Collection was expanded from the mid-2000s with various complications and dial variants. This L2.708.4.51.6 belongs to the generation with the automatic L602 calibre and the classic power-reserve indicator.

Without a dated warranty card or further serial-number documentation, no exact production year is provided.

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Case

The round case is made of stainless steel and measures 38.5 mm in diameter. The polished finish of the bezel, case sides and lugs gives the watch the typical elegant look of the Master Collection.

The relatively classic diameter ensures that the model can be worn as both a dress watch and a daily watch.

The case shows light signs of wear and fine superficial scratches consistent with normal use. There are no obvious heavy damages visible.

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Dial

The black dial is one of the most distinctive features of this version. The central portion has a fine, regular relief that becomes clearly visible depending on the light.

Around it are large silver/white Roman numerals. Along the outer edge runs a separate minute scale with Arabic markers every five minutes.

Below 12 o’clock:

LONGINES
the winged hourglass logo

Above the power-reserve indicator reads:

AUTOMATIC

At the bottom:

SWISS MADE

The combination of the black background, the light Roman numerals and the silver hands provides strong contrast and good legibility.

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Hands

The watch is equipped with elegant feuille- or blade-shaped hour and minute hands, a design that is characteristic of many models from the Longines Master Collection.

There is also a central seconds hand.

The silver-toned version matches the Roman numerals and the other light accents on the dial.

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Power-reserve indicator

At 6 o’clock sits the characteristic power-reserve indicator.

The semicircular scale shows how much energy remains in the mainspring of the automatic movement. While worn, the movement is automatically wound by the rotor, after which the indicator shows the remaining power reserve.

This model has a maximum power reserve of about 42 hours.

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Date

At 3 o’clock there is a date window.

The date is displayed on a light date disc with dark numerals, providing clear contrast against the black dial.

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Movement

Inside is the automatic Longines caliber L602.

Type: automatic mechanical
Caliber: Longines L602
Base: ETA 2897
Jewels: 21
Frequency: 28,800 vibrations per hour
Power reserve: approx. 42 hours
Complications: date and power-reserve indicator

The movement is automatically wound by the rotor, but can also be wound manually via the crown.

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Timegrapher measurement

The performed measurement shows:

Rate deviation: +4 seconds per day
Amplitude: 260°
Beat error: 0.1 ms
Lift angle: 52.0°
Frequency: 28,800 vibrations per hour

These values are a snapshot at the time of the measurement and are not a guarantee of future accuracy or the ongoing technical state of the movement.

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Back

The watch features a transparent case back, allowing the automatic movement to be seen.
The rotor is decorated with a repeating pattern and bears gold-colored:

LONGINES
L602.2

markings.

Also various parts of the mechanical movement are visible through the sapphire crystal.
Around the transparent back are the usual Master Collection engravings and model specifications.

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Crown

The ridged crown is signed with the Longines inscription and the winged hourglass logo.
Thanks to the clear knurling, the crown is easy to grip for setting the time and date and for manual winding.

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Stainless steel bracelet

The watch is equipped with a Longines stainless steel link bracelet.
The bracelet combines brushed and polished surfaces, making the individual links clearly distinct. This complements the case finish nicely.
The bracelet shows light signs of wear and fine superficial scratches consistent with normal use.

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Clasp

The steel bracelet features a signed Longines folding clasp with push-button operation.
The clasp bears both the LONGINES name and the winged hourglass logo.

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Wrist size

The current bracelet configuration fits a wrist circumference of about 19 cm.
Exact fit may vary somewhat depending on wrist shape and desired wear space.

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Condition

Case: neat used condition with light superficial signs of wear
Bezel: neat polished condition with fine hairlines
Dial: very neat condition
Glass: clear and without notable heavy damage
Crown: neat, Longines signed
Back: light signs of wear on the metal parts
Stainless steel bracelet: neat used condition with light superficial marks
Clasp: light signs of wear
Movement: functioning during the performed timegrapher measurement

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Overall condition

A neat Longines Master Collection L2.708.4.51.6 with a classic 38.5 mm case size and an attractive black textured dial. The combination of Roman numerals, feuille hands, date and power-reserve indicator gives this version a clearly classic character, while the steel bracelet makes it suitable for both formal and daily use.

The automatic L602 caliber is visible through the transparent case back and showed during the timegrapher measurement a rate deviation of +4 seconds per day, an amplitude of 260° and a beat error of 0.1 ms.