Longines Master Collection Master Collection 40 Chronograph Calendar Stainless Steel / Silver / Alligator

Reference L2.673.4.78.3

Longines Master Collection 40 Chronograph Calendar Stainless Steel / Silver / Alligator

About this watch

The Longines Master Collection 40 Chronograph Calendar is a masterpiece that exudes sophistication and functionality. With its refined design and intricate movements, it's a watch that not only tells time but tells a story. The 40mm stainless steel case boasts a polished finish that catches the light in all the right ways, while the silver guilloche dial provides a stunning backdrop for the watch's features. The addition of the moonphase indicator adds an astronomical touch, allowing you to track the lunar cycle—a perfect blend of beauty and functionality. At the heart of this timepiece is the Longines caliber L678.2, a self-winding movement based on the ETA/Valjoux 7751, with 25 jewels and a frequency of 28,800 vibrations per hour. The 42-hour power reserve means you can take the watch off for a day or two and still have it running when you put it back on. With an additional 24-hour hand, a full calendar displaying the day, date, and month, this watch is designed for those who appreciate the finer details in life.

Buy Now on Jomashop

This is an affiliate link

Key Features

40mm stainless steel case with polished finish
Silver guilloche dial with intricate pattern
Moonphase indicator with astronomical touch
Chronograph feature with intuitive interface
Longines caliber L678.2 self-winding movement
42-hour power reserve
Additional 24-hour hand and full calendar display

Specifications

Brand

Longines

Family

Master Collection

Model

Master Collection 40 Chronograph Calendar Stainless Steel / Silver / Alligator

Reference

L2.673.4.78.3

Movement

l678-2

Movement Features

Hours, Minutes, Small Seconds, Additional 24 Hour Hand (fixed)
Date, Day, Month
Chronograph
Moonphase

Case

Stainless Steel 40mm

Dial Color

Silver

Crystal

Sapphire

Water Resistance

Current Listings

Longines Master Collection - Retrograde - Silver "barleycorn" dial - Sun and Moon + Moon-phase - 44mm - With Card

Longines - Master Collection Retrograde · $2,500

A highly complicated Longines Master Collection Retrograde watch featuring a silver 'barleycorn' dial and a self-winding mechanical movement. It includes functions such as GMT moonphase, retrograde hands, small seconds, 24-hour second time zone, and a day-night indicator.

Condition: Excellent, works perfectly with no issues
Size: 44mm diameter
Lug width: 22mm
Water resistance: 3 bar

Posted at

Mar 25, 2026, 2:49 PM

Active

View listing on r/WatchExchange

Longines Master Collection L2.773.4.78.3 Moonphase Automatic Box and Papers

Longines - L2.773.4.78.3 · $2,190

The Longines Master Collection L2.773.4.78.3 is an elegant automatic wristwatch featuring a white dial, full calendar display, moonphase display, and running seconds.

Condition: Excellent, with light signs of careful wear on case and crystal
Case size: 42mm
Movement accuracy: +8 seconds per day
Bracelet/strap material: leather

Posted at

Mar 19, 2026, 2:37 PM

Active

View listing on r/WatchExchange

Longines Master Collection - Retrograde - Silver "barleycorn" dial - Sun and Moon + Moon-phase - 44mm - Comes With Card

Longines - Master Collection Retrograde · $2,500

This Longines Master Collection Retrograde features a complex set of functions including GMT Moonphase, Self winding mechanical movement, and retrograde hand displays for day, date, and second time zone. It also includes a moonphase display and day/night indicator.

Condition: Used, works perfectly with no issues
Case Size: 44mm without crown
Lug Width: 22mm
Movement: Self winding mechanical, 28'800 vibrations per hour, 48 hours power reserve

Posted at

Mar 18, 2026, 1:54 PM

Active

View listing on r/WatchExchange

Longines Master Collection L2.708.4.51.6 - $1099 - DHL

Longines - L2.708.4.51.6 · $1,099

This Longines Master Collection features a refined black dial with Roman numeral indices, a power reserve indicator, and a timeless aesthetic.

Condition: Very Good (9.5/10)
Case size: 38.5mm diameter
Material: 316L Stainless Steel
Movement: Automatic Caliber L602.2, 28,800 vibrations per hour, 42 hours power reserve

Posted at

Mar 15, 2026, 3:16 PM

Active

View listing on r/WatchExchange