Longines Master Collection Master Collection Power Reserve

Reference L2.666.6.78.6

Longines Master Collection Power Reserve

About this watch

The Longines Master Collection Power Reserve is a stunning timepiece that embodies elegance, precision, and practical functionality. Its luxurious yellow gold case exudes warmth and sophistication, while the beige guilloche dial showcases intricate craftsmanship. The Arabic numeral indexes provide excellent readability, and the feuille hands move elegantly across the dial, protected by a high-quality sapphire crystal. At its heart lies the Longines caliber L602, an automatic movement based on the ETA 2897, boasting a frequency of 28,800 vibrations per hour for precision and reliability. The power reserve indicator allows you to see how much energy is left in the movement, ensuring that your watch is always ready to go. With a date function and water resistance of 30 meters, this timepiece is perfect for everyday wear. The comfort of a high-quality leather strap complements the gold case, providing a soft touch against the wrist.
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Key Features

  • Longines caliber L602 automatic movement
  • Yellow gold case with polished finish
  • Beige guilloche dial with Arabic numeral indexes
  • High-quality sapphire crystal for scratch resistance
  • Power reserve indicator and date function
  • Water resistance of 30 meters
  • Leather strap with adjustable nature

Specifications

Brand
Longines
Family
Master Collection
Model
Master Collection Power Reserve
Reference
L2.666.6.78.6
Movement
l602
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Power Reserve Indicator
Case
Yellow Gold 42mm
Dial Color
Beige
Crystal
Sapphire
Water Resistance
30

Current Listings

[WTS] Longines Master Collection Chronograph w/ Custom 1.5 Link for Perfect Sizing! Ref L2.629.4.78.6 - $1,500 Shipped

Longines Master Collection Chronograph w/ Custom 1.5 Link for Perfect Sizing! Ref L2.629.4.78.6 - $1,500 Shipped

Longines - L2.629.4.78.6 · $1,500
This Longines Master Collection Chronograph features a classic white dial and chronograph function, making it both stylish and practical.

  • Condition: next to new
  • Bracelet size customization: custom 1.5 link for perfect sizing
  • Thickness: 11.7 mm
  • Bracelet thickness: custom 1.5 link (replace two links instead of one)
Posted at
Dec 22, 2025, 4:39 PM
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[WTS] Longines Master Collection Chrono Moonphase 40MM (L2.673.4.78.6), Longines Leather Strap, Additional Straps $2,200 Shipped

Longines Master Collection Chrono Moonphase 40MM (L2.673.4.78.6), Longines Leather Strap, Additional Straps $2,200 Shipped

Longines - L2.673.4.78.6 · $2,200
This Longines Master Collection Chrono Moonphase features a 40MM case with moon phase and chronograph functions. It comes with box, warranty card, and multiple straps.

  • Condition: Pre-owned with minor surface marks
  • Case size: 40mm diameter
  • Straps included: 4
Posted at
Dec 22, 2025, 12:16 PM
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[WTS] Longines Master Collection Moonphase Chronograph - L2.773.4.78.3

Longines Master Collection Moonphase Chronograph - L2.773.4.78.3

Longines - L2.773.4.78.3 · $1,950
This Longines Master Collection Moonphase Chronograph combines a chronograph, complete calendar, and moonphase in a traditional yet well-balanced design.

  • Condition: Very good, used condition with minor wear throughout the case
  • Case size: 42mm diameter
  • Movement type: Column-wheel automatic chronograph
  • Power reserve: 54 hours
Posted at
Dec 19, 2025, 12:40 PM
Active
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[WTS] Longines Master Collection Chrono Moonphase 40MM (L2.673.4.78.6), Longines Leather Strap, Additional Straps $2,500 Shipped

Longines Master Collection Chrono Moonphase 40MM (L2.673.4.78.6), Longines Leather Strap, Additional Straps $2,500 Shipped

Longines - L2.673.4.78.6 · $2,500
A Longines Master Collection Chrono Moonphase 40MM watch with box and warranty card, featuring multiple straps including a leather strap from the manufacturer.

  • Condition: Minor surface marks, no functional issues
  • Case size: 40mm diameter
  • Box and papers: Yes, box and warranty card dated December 2024
Posted at
Dec 15, 2025, 1:24 PM
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[WTS] - Longines Master Collection 44m Chronograph

- Longines Master Collection 44m Chronograph

Longines - 44m Master Collection Chronograph · $2,600
This is a blue Longines Master Collection Chronograph, a beautiful timepiece with a 44mm diameter case. It features a chronograph function and comes in great condition.

  • Condition: Great condition, leather strap is a bit worn
  • Band Material: Metal
  • Case Size: 44mm
Posted at
Dec 13, 2025, 1:14 PM
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[WTS] Longines Master Collection. Big Date. 40mm. Automatic.

Longines Master Collection. Big Date. 40mm. Automatic.

Longines - Master Collection. Big Date. Automatic. 40mm. · $1,100
A Longines Master Collection watch with a big date display and automatic movement, featuring a 40mm case size.

  • Case diameter: 40mm
  • Shipping cost included: true
Posted at
Dec 11, 2025, 9:14 AM
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[WTS] 40mm Longines Master Collection Chronograph / Moon Phase Ref.L2.673.4.78.3

40mm Longines Master Collection Chronograph / Moon Phase Ref.L2.673.4.78.3

Longines - L2.673.4.78.3 · $2,250
The Longines Master Collection Chronograph with Moon Phase features a chronograph, moon phase display, and a full calendar. It has a 40mm case size and is powered by an automatic caliber L687 movement.

  • Condition: Great condition, minor marks on the case
  • Movement: Automatic caliber L687 (modified ETA Valjoux 7751)
  • Case size: 40mm
  • Functions: Chronograph, moon phase display, full calendar (day, date, month)
Posted at
Dec 11, 2025, 1:11 AM
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