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 Small Seconds L2.843.4.63.2

Longines Master Collection Small Seconds L2.843.4.63.2

Longines - L2.843.4.63.2 · $1,500
The Longines Master Collection Small Seconds is a luxury watch featuring small seconds functionality.

  • Condition: no noticeable flaws
  • Straps Included: true
Posted at
Feb 21, 2026, 2:35 PM
Active
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[WTS] Longines Master Collection Moon Phase Chronograph (40mm) reference L2.673.4.78.6

Longines Master Collection Moon Phase Chronograph (40mm) reference L2.673.4.78.6

Longines - L2.673.4.78.6 · $2,499
A Longines Master Collection Moon Phase Chronograph with a 40mm case, featuring complications including hours, minutes, small seconds, date, moon phase display and chronograph functions.

  • Condition: Excellent used condition
  • Case size: 40mm diameter
  • Thickness: 14.3mm
  • Lugu length: 46.7mm
Posted at
Feb 19, 2026, 8:07 PM
Active
View listing on r/WatchExchange
Longines Master Collection Mens Automatic Watch - L2.628.5 - 38mm - USED [WTS]

Longines Master Collection Mens Automatic Watch - L2.628.5 - 38mm - USED

Longines - L2.628.5 · $999
The Longines Master Collection is a high-end watch featuring an automatic movement, suitable for formal occasions.

  • Condition: USED
Posted at
Feb 17, 2026, 9:58 PM
Active
View listing on r/WatchExchange
[WTS] Longines Avigation w/ Master collection bracelet and OEM leather (Lowest price in the world)

Longines Avigation w/ Master collection bracelet and OEM leather (Lowest price in the world)

Longines - L2.629.4 · $1,200
A Longines Avigation Chronograph with a 40mm black dial, running strong and keeping great time.

  • Condition: Lightly used
  • Bracelet type: Master collection steel bracelet
  • Strap type: OEM leather strap
  • Wrist size compatibility: up to an 8+ inch wrist
Posted at
Feb 15, 2026, 12:59 PM
Active
View listing on r/WatchExchange
[WTS] Longines Master Collection Moonphase 42mm – 2023-2024 movement L899.5 $1500

Longines Master Collection Moonphase 42mm – 2023-2024 movement L899.5 $1500

Longines - L2.919.4.78.3 · $1,500
A Longines Master Collection Moonphase watch in excellent condition, featuring a 42mm stainless steel case, silver barleycorn dial, and automatic L899.5 movement.

  • Condition: Excellent condition
  • Case size: 42mm diameter
  • Movement caliber: L899.5
  • Power reserve: ~72-hour power reserve
Posted at
Feb 11, 2026, 1:31 PM
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[WTS] Longines Master Collection Chronograph Moonphase L2.673.4.61.2 – $2,850 shipped

Longines Master Collection Chronograph Moonphase L2.673.4.61.2 – $2,850 shipped

Longines - L2.673.4.61.2 · $2,850
This Longines Master Collection Chronograph Moonphase features a chronograph function and moon phase display. The watch is in excellent condition with very minor signs of wear.

  • Condition: Excellent overall condition, lightly worn
  • Case wear: very minor signs
  • Crystal condition: flawless
  • Dial condition: flawless
Posted at
Feb 8, 2026, 1:09 PM
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[WTS] Longines Master Collection Moonphase Chronograph L2.673.4.78.3

Longines Master Collection Moonphase Chronograph L2.673.4.78.3

Longines - L2.673.4.78.3 · $2,050
This Longines Master Collection Moonphase Chronograph features an array of complications, a 40mm size, automatic movement, and original strap.

  • Condition: fair to good pre-owned condition
  • Size: 40mm diameter
  • Movement: Automatic movement
Posted at
Feb 8, 2026, 10:03 AM
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