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Longines Flagship Classic Heritage Moonphase 38.5mm Mens Watch Grey
Ref. L48154522
Sits in Longines’s upper tier here — more premium than three quarters of the Longines watches we list, which start at £1,050.
Price range £1,050 to £22,850 across 161 Longines watches in stock.The Flagship name entered Longines' catalogue in 1957, and this 2024 re-edition draws directly from that mid-century origin. The detail that makes the connection explicit is hidden on the reverse: a hand-painted Grand Feu enamel caravel medallion rendered in 18-carat gold, the same emblem the original collection carried. That kind of finishing on a screwed caseback is unusual at any level, and it is the reason this feels like a considered revival rather than a rebadged classic. At 38.5mm with a lug-to-lug of 46.3mm, it sits close to the wrist and reads neatly under a cuff — the sunray anthracite dial has the depth to hold interest without demanding attention, and the moonphase sits in the lower half of the dial with the restraint the format calls for. The silicon balance spring in the L899.5 gives the movement genuine resistance to magnetic fields, which matters more in daily wear than the material sounds: phones, bag clasps and laptop lids will not disturb its rate. Seventy-two hours of power reserve means a watch taken off on Friday morning is still running Monday.
- Reference
- L48154522
- Brand
- Longines
- Collection
- Heritage
- Case size
- 38.5mm
- Case thickness
- 12.4mm
- Lug width
- 19mm
- Case material
- Stainless steel
- Case shape
- Round
- Dial
- Anthracite
- Crystal
- Sapphire
- Movement
- Automatic
- Calibre
- L899.5
- Functions
- Date, Moonphase
- Water resistance
- 30m
- Bracelet / strap
- Leather strap
- Strap colour
- Grey
- Clasp
- Deployant clasp
- Lume
- Luminous
- Retailer
- Goldsmiths
Additional specifications
- Lug-to-lug
- 46.3mm
- Power reserve
- 72 hours
Learn more about Longines
Auguste Agassiz began trading watches in Saint-Imier in 1832, but the modern company dates from 1860, when his nephew Ernest Francillon built a factory in the meadows beside the Suze — the longines of the local dialect — and consolidated the scattered outworkers of the region under one roof.
Longines registered its winged hourglass in 1889. It is the oldest watch trademark still in continuous use.
The company's identity was built on precision and on timing things in public. It supplied chronographs for the first modern Olympic events it timed in 1896, timed the 1912 Federal Gymnastics Festival with a broken-wire mechanism accurate to a hundredth of a second, and developed the photo-finish camera and the quartz timing devices used across twentieth-century athletics.
Its aviation associations are equally deep. Longines instruments were carried by Charles Lindbergh across the Atlantic in 1927, and the Hour Angle watch, designed to Lindbergh's own specification to simplify longitude calculation, remains in the catalogue. Amelia Earhart and Howard Hughes both navigated by Longines.
The house was among the most decorated at nineteenth-century observatory trials, holding numerous precision records. Since joining the Swatch Group in 1983 it has occupied the accessible-heritage position: exclusive ETA-based movements, archive-driven designs through the Heritage line, and volume that makes it one of the group's most important brands.
- 1860
- Ernest Francillon builds the factory at Les Longines.
- 1889
- The winged hourglass is registered — the oldest watch trademark in use.
- 1912
- Broken-wire timing achieves hundredth-second accuracy.
- 1927
- Lindbergh crosses the Atlantic with Longines instruments.
- 1983
- Becomes part of the Swatch Group.
Manufacturer’s guarantee
Your new watch
Frequently asked questions, and things you should know about this watch
Can I swim with it?
No. At 30m it will survive rain and handwashing, but not submersion of any kind.
Will the glass scratch?
Unlikely. Sapphire is second only to diamond in hardness and shrugs off everyday marking.
Does it need a battery?
No. It is automatic — the motion of your wrist winds it, and there is no cell to replace.
How long does it run for when it's not worn?
About 72 hours fully wound — enough to sit off the wrist over a weekend and still be running.
What size strap does it take?
19mm. Any strap of that width will fit, and on most modern watches quick-release bars make the swap a two-minute job with no tools.
Will it fit my wrist?
Lug-to-lug is 46.3mm, which suits wrists from roughly 16cm (6¼ inches) upward.
Lug-to-lug decides fit more than case diameter does.
Is it a men's or women's watch?
Listed as men's, though at 38.5mm it sits in the range that suits anyone.
Cheapest place to buy
Goldsmiths is the only UK retailer we track stocking this reference, so there is nothing to compare it against today.
Who are Goldsmiths?
Goldsmiths has been selling watches in Britain since 1778 and is part of the Watches of Switzerland Group, which is listed on the London Stock Exchange. They are an authorised dealer, so a watch comes with the manufacturer’s own warranty.
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