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Longines Legend Diver Heritage 42mm Mens Watch
Ref. L37744506
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Stepping up in the same colour and case shape
The Legend Diver traces directly to the Ref. 7042 "Super-Compressor" of 1960, a watch built for serious depth work at a time when the internal rotating bezel was a genuine engineering solution rather than a stylistic gesture. This revival keeps the mechanism intact: the dive flange turns via a dedicated crown at 2 o'clock, leaving the case flank uninterrupted and the crown-at-3 position free for date and winding. That fidelity to the original architecture is what separates it from the broader Heritage range. At 42mm with a 52.6mm lug-to-lug, it wears with presence, but the vintage-profile lugs curve down to the wrist in a way that distributes the length better than modern straight-lug geometry would. The 12.7mm case height is notably restrained for a 300m-rated watch — it will pass under a cuff without ceremony. The Milanese mesh bracelet suits this better than a link bracelet would: it follows the wrist naturally, and the slider micro-adjustment in the clasp means fit is genuinely continuous rather than stepped. The L888 is a modified ETA A31.L11 running at 25,200vph with a 72-hour reserve — a calibre Longines has substantially reworked to the point where it performs well above its base movement origins. The caseback carries a diving medallion, a small detail that lands differently once you know the lineage behind it.
- Reference
- L37744506
- Brand
- Longines
- Collection
- Legend Diver
- Case size
- 42mm
- Case thickness
- 12.7mm
- Lug width
- 22mm
- Case material
- Stainless steel
- Case shape
- Round
- Dial
- Black
- Crystal
- Sapphire
- Bezel
- Unidirectional rotating
- Movement
- Automatic
- Calibre
- ETA A31.L11
- Functions
- Date
- Water resistance
- 300m
- Bracelet / strap
- Stainless steel bracelet
- Strap colour
- Silver
- Clasp
- Deployant clasp
- Lume
- Luminous
- Retailer
- Goldsmiths
Additional specifications
- Lug-to-lug
- 52.6mm
- 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.
Also in 6 collections
This watch appears in the Longines Legend Diver range (15), Back in Stock (3,734), Stainless Steel Watches (2,581), Automatic Watches (1,570), Sports Watches (707) and Dive Watches (505).
Temporarily out of stock
Goldsmiths is not currently taking orders for this reference. Last listed as available on 16 September 2026. Stock is checked nightly and this page updates when it returns.
What the specifications mean
A mechanical watch built to be worn hard and got wet.
Strengths
- 300m water resistance, rated for actual diving
- Sapphire crystal, which resists scratching
- 72-hour reserve survives a weekend off the wrist
- Luminous hands and markers for low light
Longines Legend Diver Heritage alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | L37744506 | R32138303 | ZO3560 |
|---|---|---|---|
| Price | £2,350 | £2,300 | £2,299 |
| Case size | 42mm | 42mm | 42mm |
| Water resistance | 300m | 300m | 300m |
| Movement | Automatic | Automatic | Automatic |
| Strap | Stainless steel bracelet | Stainless steel bracelet | Stainless steel bracelet |
| Power reserve | 72 hours | 80 hours | — |
| This watch | Closely matched | Closely matched |
Your new watch
Frequently asked questions, and things you should know about this watch
Can I swim with it?
Yes. At 300m it is rated for swimming, snorkelling and recreational diving.
Water resistance explainedWill the glass scratch?
Unlikely. Sapphire is second only to diamond in hardness and shrugs off everyday marking.
Sapphire, mineral and acrylic comparedDoes 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 comparedHow 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?
22mm. 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 52.6mm, which suits wrists from roughly 17.5cm (7 inches) upward.
Lug-to-lug decides fit more than case diameter does.
How to size a watch to your wristIs it a men's or women's watch?
Listed as men's.
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