Longines Master L27734783, 42mm, Brown Leather Strap
Longines Master Collection is a 42mm automatic chronograph with L687 movement, moon phase, sapphire crystal, silver dial and brown alligator strap.
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About this item
- Automatic L687 movement with hours, minutes and small seconds
- 24-hour indicator at 9 o'clock, date shown by half-moon central hand
- Chronograph with central 60-second hand and 30-minute counter at 12 o'clock
- Moon phase display at 6 o'clock with 12-hour counter and day and month display
- Sapphire crystal case back, brown alligator strap with triple safety folding clasp
- 5-year international warranty
Top Highlights
- Brand
- Longines
- Model Name
- Master
- Model Number
- L27734783
- Department
- Men
- Item Type
- Chronograph
- Country of Origin
- Switzerland
Features & Specs
- Display
- Analog
- Movement Type
- Swiss automatic
- Calibre
- L687
- Additional Features
- Chronograph
- Complications
- Chronograph, Date, Moonphase, 24-hour indicator, Small seconds, Day-month
- Chrono Subdials
- 2
- Case Material
- Stainless steel
- Case Size
- 42.0 mm
- Case Thickness
- 14.2 mm
- Lug Width
- 21.0 mm
- Weight
- 449 g
- Water Resistance
- 0 m
- Strap
- Leather
- Clasp
- Triple safety folding clasp with push-piece opening
- Crystal
- Sapphire crystal
- Bezel
- Stainless Steel
Style
- Dial Shape
- Round
- Dial Colour
- Silver "barleycorn"
- Band Color
- Brown
- Collection
- Master Collection
Description
The Longines Master Collection brings a complete calendar chronograph to a classic 42mm round case. It suits anyone who wants a traditional dress-leaning watch with real mechanical complexity.
The automatic L687 movement drives hours, minutes and small seconds with a 24-hour indicator at 9 o'clock. The stainless steel case carries a sapphire crystal and a transparent case back, so the mechanism is visible. The silver barleycorn dial is paired with a stainless steel bezel.
The standout detail is the moon phase display at 6 o'clock, combined with a 12-hour counter, a 30-minute counter at 12 o'clock and a half-moon central date hand. A brown alligator strap with triple safety folding clasp finishes the watch for daily wear.
Frequently Asked Questions
Can I wear this Longines Master Collection every day at the office?
Yes for most office settings. The 42mm round steel case and brown alligator strap give it a dress look that suits daily wear. Its 14.2mm thickness is the only point to watch if you prefer slim, fitted shirt cuffs.
What movement is inside and what does it show?
It uses the automatic L687 movement. It shows hours, minutes and small seconds with a 24-hour indicator at 9 o'clock, a central 60-second chronograph hand, a 30-minute counter, moon phase at 6 o'clock, plus day and month.
Is it suitable for swimming or the shower?
The listing gives no water resistance figure, so it is best treated as a dress watch. Keep it away from swimming and showers, and avoid water around the leather strap and crown during daily use.
How does it differ from a plain automatic chronograph?
Compared with a simple chronograph, this model adds a moon phase, day and month display, a half-moon date hand and a 24-hour indicator. That means more to read, but also more mechanical interest and a see-through sapphire case back.
Will a 42mm case fit my wrist?
A 42mm case with 21mm lugs generally suits wrists of about 6.75 to 8 inches. The 14.2mm thickness gives noticeable presence, so smaller wrists may find it prominent. Check the fit on your own wrist if possible.
How should I service this watch?
Automatic chronographs with calendar functions generally benefit from a service every five years or so. Choose an authorised service centre, and keep the alligator strap away from moisture to extend its life.
Editor's take
Longines positions the Master Collection as its classical complicated line, and this 42mm chronograph shows why. It will appeal to collectors who like a traditional dial layout, with a calendar and moon phase rather than a sporty tool look.
The heart of the watch is the automatic L687 movement, which handles a 24-hour indicator, small seconds and a moon phase display. The sapphire crystal and transparent case back let you see the mechanism at work, while the barleycorn dial adds texture to the silver face.
The cost of so many indications is legibility. With day, month, date, moon phase and two chronograph counters sharing one dial, glancing at the time takes a moment longer than on a simple three-hander. Case thickness of 14.2mm also means it will not slip easily under a tight cuff.
It suits someone who wants a mechanical dress chronograph with calendar depth, worn on its alligator strap with triple safety folding clasp. For a simpler layout at a similar price, a plain automatic chronograph is the alternative to consider.
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