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, crafted 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 mechanical movement with decorated Longines rotor is visible.

──────────────────

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
Crystal: sapphire glass
Movement: automatic mechanical
Caliber: Longines L602
Base movement: ETA 2897
Frequency: 28,800 A/h
Number of jewels: 21
Power reserve: approximately 42 hours
Functions: hours, minutes, central second, date and power-reserve indicator
Case back: transparent case back with sapphire crystal
Bracelet: Longines stainless steel bracelet
Clasp: Longines folding clasp with push-buttons
Water resistance according to model specifications: 3 bar / 30 meters

──────────────────

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

──────────────────

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

──────────────────

Case

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

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

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

──────────────────

Dial

The black dial is one of the most distinctive features of this edition. 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 numerals every five minutes.

Below 12 o’clock reads:
LONGINES
The Winged Hourglass logo

Above the power-reserve indicator reads:
AUTOMATIC

At the bottom:
SWISS MADE

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

──────────────────

Hands

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

There is also a central seconds hand.

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

──────────────────

Power-reserve indicator

At 6 o’clock sits the characteristic power-reserve indicator.
The semicircular scale shows how much energy is left in the barrel of the automatic movement. While worn, the movement is wound automatically by the rotor, after which the indicator shows the remaining power reserve.
This model has a maximum power reserve of approximately 42 hours.

──────────────────

Date

At 3 o’clock there is a date window.
The date is displayed on a light date disc with dark numbers, providing clear contrast against the black dial.

──────────────────

Movement

Inside sits the automatic Longines caliber L602.
Type: automatic mechanical
Caliber: Longines L602
Base: ETA 2897
Number of jewels: 21
Frequency: 28,800 vph
Power reserve: approximately 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.

──────────────────

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 are not a guarantee of future accuracy or the current technical state of the movement.

──────────────────

Case back

The watch features a transparent case back, allowing the automatic movement to be visible.
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 glass.
Around the transparent back are the usual Master Collection engravings and model specifications.

──────────────────

Crown

The knurled 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.

──────────────────

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 distinguishable. This nicely complements the finish of the case.
The bracelet shows light signs of wear and fine superficial scratches consistent with normal use.

──────────────────

Clasp

The steel bracelet features a signed Longines folding clasp with push-button release.
The clasp bears both the LONGINES name and the Winged Hourglass logo.

──────────────────

Lug-to-lug / wrist size

The current configuration of the stainless steel bracelet is suitable for a wrist circumference of about 19 cm.
Exact fit may vary slightly depending on wrist shape and desired gap.

──────────────────

Condition

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

──────────────────

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 edition a clearly classical character, while the 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 measurement a rate deviation of +4 seconds per day, an amplitude of 260° and a beat error of 0.1 ms.