Longines Master Collection Master Collection Power Reserve

Reference L2.666.4.78.6

About this watch

The Longines L2.666.4.78.6 Master Collection Power Reserve exudes luxury with its round stainless steel case, polished finish, and guilloche dial. The beige color provides an excellent backdrop for the Arabic numeral indexes and Feuille hands, which are elegantly designed and easy to read. This watch is a statement piece that captures attention effortlessly, thanks to its sophisticated design and powerful movement. At the core of this timepiece is the Longines caliber L602, an automatic movement that delivers precision and reliability with a frequency of 28,800 vibrations per hour and a power reserve of 42 hours. With 21 jewels, the L602 movement minimizes friction and wear, ensuring longevity. The watch also boasts a power reserve indicator, adding to its aesthetic appeal. This attention to detail is what sets Longines apart from many other brands, making each watch a piece of art that embodies decades of horological expertise. Whether you're at the office or out for a night on the town, this watch is comfortable to wear and pairs well with various outfits. With a water resistance rating of 30 meters, it's suitable for daily wear but not ideal for diving or extensive water sports.
Buy Now on Jomashop
This is an affiliate link

Key Features

  • Round stainless steel case
  • Polished finish
  • Guilloche dial
  • Beige color with Arabic numeral indexes and Feuille hands
  • Longines caliber L602 automatic movement
  • Power reserve indicator
  • 42 hours power reserve
  • 21 jewels for reduced friction and wear

Specifications

Brand
Longines
Family
Master Collection
Model
Master Collection Power Reserve
Reference
L2.666.4.78.6
Movement
l602
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Power Reserve Indicator
Case
Stainless Steel 42mm
Dial Color
Beige
Crystal
Sapphire
Water Resistance
30

Current Listings

[WTS] Lot of three Longines (Conquest, Master Collection, and Spirit) and two NOMOS Glashütte (Club Automat and Metro Neomatik), some with unworn bands, boxes, and papers. Over $16k retail, asking only $6995 for all five watches.

Lot of three Longines (Conquest, Master Collection, and Spirit) and two NOMOS Glashütte (Club Automat and Metro Neomatik), some with unworn bands, boxes, and papers. Over $16k retail, asking only $6995 for all five watches.

A collection of five watches from Longines and NOMOS Glashütte, including the Conquest, Master Collection, Spirit, Club Automat Datum Dunkel, and Metro Neomatik 41 Update.

  • Retail value: $16k
  • Shipping: CONUS shipped
  • Payment methods: Zelle/Venmo preferred, PayPal FF available
Posted at
Dec 7, 2025, 7:25 PM
Active
Longines Master Collection Moonphase L2.673.4.78.3 [WTS]

Longines Master Collection Moonphase L2.673.4.78.3

Longines - L2.673.4.78.3 · $2,100
This is a Longines Master Collection Moonphase watch in the 40mm size, featuring a moonphase display and a full kit with leather strap, links, spring bars, inner box, outer box, manuals, and hang tags.

  • Condition: Near perfect with one small mark near the lugs
  • Size: 40 mm diameter
  • Strap condition: Shows some signs of wear
Posted at
Nov 30, 2025, 11:46 AM
Active
[WTS] Longines Master Collection Moonphase Chronograph 40mm L2.673.4.78.6

Longines Master Collection Moonphase Chronograph 40mm L2.673.4.78.6

Longines - L2.673.4.78.6 · $2,100
This Longines Master Collection Moonphase Chronograph is a 40mm version featuring a Column Wheel, with a box and papers included.

  • Condition: Pre-owned with wear and use
  • Size: 40mm diameter
  • Box condition: Damaged with one flap falling off and taped
  • Papers included: Yes
Posted at
Nov 26, 2025, 11:56 PM
Active