Kensington Watches
Louis Erard 2340 Louis Erard X Astro Boy 40mm Limited Edition Mens Watch

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Louis Erard

Louis Erard 2340 Louis Erard X Astro Boy 40mm Limited Edition Mens Watch

Ref. 35123TA23.BMT12

Among our 30 Louis Erard watchesThis watch£4,390
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Stepping up in Louis Erard's range

Price range £1,975 to £17,500 across 30 Louis Erard watches in stock.

A tonneau-shaped case pairs a satin-finished titanium middle with a polished stainless steel bezel, lugs, and crown — a hybrid construction that keeps the total weight to 92 grams. At 8.95mm thick and 40mm across, it sits close to the wrist. The screw-down caseback carries an engraved Astro Boy figure, while the domed sapphire crystal is treated with anti-reflective coating on both sides. The vertically brushed grey dial is built up in layers: an applied Astro Boy figure in flight, a smoke trail, clouds, and an engraved Metro City motif beneath. Applied silver baton indices and hands carry blue-emission Super-LumiNova. The Sellita SW300-1 automatic runs at 28,800vph with a 56-hour power reserve. The integrated bracelet combines satin titanium and polished steel links, fastened by a concealed butterfly clasp. Limited to 178 pieces.

Reference
35123TA23.BMT12
Brand
Louis Erard
Case size
40mm
Case thickness
8.95mm
Case material
Stainless steel
Dial
Silver
Crystal
Sapphire
Movement
Automatic
Calibre
Sellita SW300-1
Water resistance
50m
Bracelet / strap
Stainless steel bracelet
Strap colour
Silver
Clasp
Folding clasp
Lume
Super-LumiNova
Retailer
Goldsmiths
Additional specifications
Lug-to-lug
41.5mm
Power reserve
56 hours
Weight
92g
Learn more about Louis Erard

Louis Erard was born in La Chaux-de-Fonds in 1893, into a town then producing a large share of the world's watches. He worked in its workshops, founded a watchmaking school in 1929, and set up a casing and assembly business with André Perret the same year. The first watches under his own name followed in 1931.

Assembly was the trade at the time: components came from independent artisans and the assembler built, adjusted and finished the watch. By 1937 Erard employed more than sixty people and was selling internationally.

The quartz crisis did its usual damage. The company was sold in 1991 and production moved to Le Noirmont in the Jura, then sold again in 2003 to a group led by Alain Spinedi, who refocused it on mechanical watches at prices that undercut everyone doing similar work.

The regulator became the signature — the dial layout that separates hours, minutes and seconds onto their own axes, borrowed from precision reference clocks, and rarely seen at this price.

What has made the brand's recent reputation is collaboration: limited editions with independent watchmakers whose own work is unobtainable, among them Vianney Halter, Konstantin Chaykin and Alain Silberstein, on Sellita and Valjoux movements.

1929
Founds a watchmaking school and a casing business with André Perret.
1931
The first watches carry the Louis Erard name.
1991
Sold, with production moving to Le Noirmont.
2003
Relaunched under Alain Spinedi around mechanical watches.
2020
Collaborations with independent watchmakers define the brand.

All Louis Erard watches

Also in 5 collections

This watch appears in Back in Stock (3,434), Stainless Steel Watches (2,782), Automatic Watches (1,540), Silver Dial Watches (622) and Limited Edition Watches (187).

Manufacturer’s guarantee

What the specifications mean

A mechanical watch for everyday wear.

Strengths

  • 40mm suits most wrists
  • 8.95mm is unusually slim for a 40mm case
  • 41.5mm lug-to-lug keeps the 40mm case wearable
  • Sapphire crystal, which resists scratching
  • Luminous hands and markers for low light

Worth knowing

  • 50m suits rain and handwashing, not swimming
Best forEveryday wearDress wear
Less suited toSwimming

Louis Erard 2340 Louis Erard X alternatives

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

2340 Louis Erard X Astro Boy 40mm Limited Edition Mens Watch compared with 2 alternatives from other brands
SpecificationThis watch2340 Louis Erard X Astro Boy 40mm Limited Edition Mens Watch35123TA23.BMT12Baume & MercierClifton 39mm Mens Watch BlackBMM0A10758Grand SeikoAutomatic GMT Snowdrop 39.5mm Mens Watch WhiteSBGM255
Price£4,390£4,450£4,550
Case size40mm39mm39.5mm
Water resistance50m50m30m
MovementAutomaticAutomaticAutomatic
StrapStainless steel braceletLeather strapLeather strap
Power reserve56 hours120 hours72 hours
This watchClosely matched
  • Rated shallower

Your new watch

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

Can I swim with it?

Showering yes, swimming no. 50m covers splashes and brief immersion, but a swimming stroke generates well above the pressure that figure describes.

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

Will it fit my wrist?

Lug-to-lug is 41.5mm, which suits wrists from roughly 15cm (6 inches) upward.

Lug-to-lug decides fit more than case diameter does.

How to size a watch to your wrist

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

Listed as men's, though at 40mm 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.

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