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 – stainless steel bracelet

An elegant Longines Master Collection watch with reference L2.708.4.51.6, made of stainless steel and featuring a characterful black textured dial. This edition combines classical Roman numerals and feuille hands with a practical power-reserve indicator at 6 o’clock and a 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 mechanical movement with a 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 markers: Roman numerals
Glass: sapphire glass
Movement: automatic mechanical
Caliber: Longines L602
Base movement: ETA 2897
Frequency: 28,800 A/h
Jewel count: 21
Power reserve: approx. 42 hours
Functions: hours, minutes, central seconds, date and power-reserve indicator
Caseback: transparent case back with sapphire glass
Bracelet: Longines stainless steel bracelet
Clasp: Longines folding clasp with push-buttons
Water resistance according to model specification: 3 bar / 30 meters

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Key details

– 38.5 mm stainless steel case
– Black textured dial
– Large contrasting Roman numerals
– Silver-colored feuille hands
– Central seconds hand
– Date window at 3 o’clock
– Power-reserve indicator at 6 o’clock
– Automatic Longines caliber L602
– Around 42 hours power reserve
– Sapphire glass
– Transparent case back
– Longines stainless steel bracelet with signed folding clasp
– Signed Longines crown
– Current timegrapher measurement available

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Estimated year of manufacture

Estimated 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 caliber and the classic power-reserve indicator.

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

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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 appearance of the Master Collection.

The relatively classical diameter makes the model suitable as both a dress watch and a daily wearer.

The case shows light signs of wear and fine superficial hairlines consistent with normal use. No obvious heavy damage is visible.

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Dial

The black dial is one of the most distinctive features of this version. The central area 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 markings 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-tone 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 characteristic of many Longines Master Collection models.

There is also a central seconds hand.

The silver-toned variant matches the Roman numerals and the other light accents of the dial.

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Power-reserve indicator

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

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

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

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Date

At 3 o’clock 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 A/h
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 A/h

These values are a snapshot during the measurement and do not constitute a guarantee for future accuracy or the ongoing technical condition of the movement.

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Case 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 markings:

LONGINES
L602.2

Some components of the mechanical movement are also visible through the sapphire glass.

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.

The clear knurling makes the crown 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 bracelet.

The bracelet combines brushed and polished surfaces, so the different links are clearly distinguished. This complements the finish of the case.

The bracelet shows light signs of wear and fine superficial scratches consistent with normal use.

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Clasp

The stainless 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 fit

The current bracelet configuration fits a wrist circumference of about 19 cm.

Exact fit may vary slightly depending on wrist shape and desired wearing room.

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Condition

Case: good-used condition with light superficial signs of wear
Bezel: good-polished condition with fine scratches
Dial: very good condition
Glass: clear with no noticeable heavy damage
Crown: good condition, Longines signed
Case back: light signs of wear on metal parts
Stainless steel bracelet: good-used condition with light superficial marks
Clasp: light signs of wear
Movement: functioning during the performed timegrapher test

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General 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 stainless steel bracelet makes it suitable for both formal and daily wear.

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