Longines Master Collection Master Collection Date 42

Reference L2.665.4.78.3

About this watch

The Longines Master Collection Date 42, with reference L2.665.4.78.3, embodies elegance and precision. Crafted from stainless steel, this round watch boasts a 42 mm diameter and features an open back showcasing intricate mechanics. The beige dial, complemented by Arabic numerals, exudes timeless sophistication. The Longines caliber L691.2 automatic movement operates at 28,800 vibrations per hour and offers a 46-hour power reserve. This reliable timepiece features hours, minutes, seconds, and date functions, making it perfect for everyday use. With a water resistance of up to 30 meters, the Master Collection Date 42 is suitable for light splashes and rain. The 21 mm lug width allows for customization with various strap options. Its lightweight design ensures comfortable all-day wear. As a piece of history, art, and Swiss watchmaking excellence, the Longines Master Collection Date 42 stands out in the luxury watch market.
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Key Features

  • Stainless Steel Case
  • Sapphire Crystal
  • 30m Water Resistance
  • Longines Caliber L691.2 Movement
  • 46-hour Power Reserve
  • Hours, Minutes, Seconds, and Date Functions

Specifications

Brand
Longines
Family
Master Collection
Model
Master Collection Date 42
Reference
L2.665.4.78.3
Movement
l691-2
Movement Features
  • Hours, Minutes, Seconds
  • Date
Case
Stainless Steel 42mm
Dial Color
Beige
Crystal
Sapphire
Water Resistance
30

Current Listings

[WTS] Longines Master Collection 40mm Rose Gold L2.793.5.79.7 w Box $1900

Longines Master Collection 40mm Rose Gold L2.793.5.79.7 w Box $1900

Longines - L2.793.5.79.7 · $1,900
A rose gold dress watch with a 40mm case, available as a standalone timepiece or paired with its matching 18K rose gold bracelet.

  • Condition: Good shape
  • Material: Rose Gold
  • Bracelet material: 18K Rose Gold
Posted at
May 14, 2026, 3:07 PM
Active
[WTS] Longines Master Collection World Time Ref. L2.631.4.70.6 | Excellent Condition (Box, Booklet, Card) | $1550

Longines Master Collection World Time Ref. L2.631.4.70.6 | Excellent Condition (Box, Booklet, Card) | $1550

Longines - L2.631.4.70.6 · $1,550
The Longines Master Collection World Time Ref. L2.631.4.70.6 is a modern travel watch with a stainless steel case, silver barleycorn dial, and world-time city ring.

  • Condition: Excellent
  • Case size: 38.5mm diameter
  • Bracelet length: up to 20cm (8 inches)
  • Movement: Longines Calibre L635 (based on ETA 2824-2 with GMT/world-time complication)
Posted at
May 10, 2026, 10:47 PM
Active
[WTS] Longines Master Collection Moonphase L2.909.4.78 — 40mm — Full Kit — $1,699 Shipped 🔥

Longines Master Collection Moonphase L2.909.4.78 — 40mm — Full Kit — $1,699 Shipped 🔥

Longines - L2.909.4.78 · $1,699
A Longines Master Collection Moonphase watch in a 40mm case, featuring a moon phase display.

  • Condition: Good overall, with light hairlines throughout.
  • Case size: 40mm
  • Shipping options: FedEx 2-Day fully insured (+$15 overnight)
  • Shipping location: Chicago
Posted at
May 10, 2026, 7:59 PM
Active
[WTS] LONGINES MASTER COLLECTION MOONPHASE 42mm

LONGINES MASTER COLLECTION MOONPHASE 42mm

A Longines Master Collection Moonphase watch with a 42mm diameter and moon phase functionality.

  • Condition: New
  • Case Size: 42mm diameter
  • Box And Papers: true
Posted at
May 9, 2026, 4:10 PM
Active
[WTS] 2022 Longines Master Collection L26734920 Moonphase Blue dial - Box + Papers

2022 Longines Master Collection L26734920 Moonphase Blue dial - Box + Papers

Longines - L26734920 · $2,890
The Longines Master Collection is an elegant and highly regarded automatic wristwatch that blends classic watchmaking with refined complications. It features a blue dial with a full calendar display, moonphase display, and running seconds.

  • Condition: attractive condition with honest signs of previous wear
  • Case size: 42mm diameter
  • Movement type: automatic
Posted at
May 8, 2026, 2:46 PM
Active