Kensington Watches
Longines Conquest 42mm Mens Watch Green Rubber Strap

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Longines

Longines Conquest 42mm Mens Watch Green Rubber Strap

Ref. L38354029

Among our 283 Longines watchesThis watch£3,550
Premium

Sits in Longines’s upper tier here — more premium than three quarters of the Longines watches we list, which start at £900.

Price range £900 to £22,850 across 283 Longines watches in stock.

The 42mm stainless steel case pairs a matt silver dial with contrasting green chronograph sub-dials — small seconds at 3 o'clock, a 12-hour counter at 6, and a 30-minute counter at 9. A fixed green ceramic bezel carries a tachymeter scale, while the case features brushed surfaces on the lug tops and polished flanks. Silvered hands and applied hour markers are treated with Super-LumiNova. The sapphire crystal has multi-layered anti-reflective coating on both sides. Inside, the automatic L898 calibre runs at 28,800 vph with a silicon balance-spring and 59 hours of power reserve. A green rubber strap with a double security folding clasp completes the watch, which is water-resistant to 100 metres.

Reference
L38354029
Brand
Longines
Collection
Conquest
Case size
42mm
Case thickness
14.30mm
Case material
Stainless steel
Case shape
Round
Dial
Silver
Crystal
Sapphire
Bezel
Fixed tachymeter
Movement
Automatic
Calibre
L898
Functions
Chronograph, Small seconds, Tachymeter
Water resistance
100m
Bracelet / strap
Rubber strap
Strap colour
Green
Clasp
Folding clasp
Lume
Super-LumiNova
Retailer
Mappin & Webb
Additional specifications
Power reserve
59 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.

All Longines watches

Also in 5 collections

This watch appears in the Longines Conquest range (60), Stainless Steel Watches (3,088), Automatic Watches (1,763), Chronograph Watches (1,182) and Silver Dial Watches (702).

Temporarily out of stock

Goldsmiths is not currently taking orders for this reference. Last listed as available on 14 September 2026. Stock is checked nightly and this page updates when it returns.

Out of stock

What the specifications mean

A mechanical watch for everyday wear.

Strengths

  • 100m water resistance covers swimming and watersports
  • Sapphire crystal, which resists scratching
  • Luminous hands and markers for low light
  • One of Longines's more premium watches

Worth knowing

  • 14.3mm thick, so it will not disappear under a cuff
Best forSwimmingTiming things
Less suited toUnder a shirt cuff

Longines Conquest alternatives

Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.

Conquest 42mm Mens Watch Green Rubber Strap compared with 2 alternatives from other brands
SpecificationThis watchConquest 42mm Mens Watch Green Rubber StrapL38354029NorqainIndependence Skeleton Grey 42mmN3000.07S02.G01.R01Baume & MercierRiviera 42mm Mens Watch BlueBM0A10616
Price£3,550£3,600£3,600
Case size42mm42mm42mm
Water resistance100m100m100m
MovementAutomaticAutomaticAutomatic
StrapRubber strapRubber strapStainless steel bracelet
Power reserve59 hours41 hours120 hours
This watchClosely matchedClosely matched

Your new watch

Frequently asked questions, and things you should know about this watch

Can I swim with it?

Yes. At 100m it is rated for swimming and snorkelling, though not for diving.

Water resistance explained

Will the glass scratch?

Unlikely. Sapphire is second only to diamond in hardness and shrugs off everyday marking.

Sapphire, mineral and acrylic compared

Does it need a battery?

No. It is automatic — the motion of your wrist winds it, and there is no cell to replace.

Quartz, automatic and solar compared

How long does it run for when it's not worn?

About 59 hours fully wound — enough to survive a night off the wrist, but not a full weekend.

Is it a men's or women's watch?

Listed as men's.

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