Longines Master Collection Master Collection Power Reserve

Reference L2.666.4.51.6

About this watch

The Longines Master Collection Power Reserve (L2.666.4.51.6) is a masterpiece of elegance and precision. Founded in 1832, Longines has a rich heritage in watchmaking, combining traditional techniques with modern advancements. The round stainless steel case exudes durability and sophistication, while the sleek black guilloche dial catches the light beautifully. The automatic movement, based on the reliable ETA 2897, ensures precise timekeeping with a frequency of 28800 vibrations per hour. One of the standout features is the power reserve indicator, letting you know how much power is left in the watch's reserve—up to 42 hours. With its blend of classic design, reliable functionality, and reasonable pricing, this watch is perfect for everyday wear, suitable for both casual and formal occasions. Whether you're dressing up for a gala or simply heading to the office, this watch is the perfect accessory to keep you punctual and stylish.
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Key Features

  • Elegant round stainless steel case
  • Sleek black guilloche dial
  • Automatic movement with 28800 vibrations per hour
  • Power reserve indicator up to 42 hours
  • Durable water resistance of 30 meters
  • Classic Roman numeral indexes and feuille hands
  • Affordable luxury price point

Specifications

Brand
Longines
Family
Master Collection
Model
Master Collection Power Reserve
Reference
L2.666.4.51.6
Movement
l602
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Power Reserve Indicator
Case
Stainless Steel 42mm
Dial Color
Black
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