The Titanium Field Guide

Louis Erard 2340 Louis Erard x Astro Boy

35123TA23.BMT12

The Louis Erard 2340 Louis Erard x Astro Boy is a current-production integrated bracelet watch with a Titanium case, finished with brushed titanium case middle, with polished steel bezel, lugs and crown.

All Louis Erard watchesTitanium integrated bracelet watchesUnder 11 mm thickOn a titanium bracelet
Titanium
Titanium
Water resistance
50 m
Nickel-free
No
Reference
35123TA23.BMT12
Type
Integrated bracelet
Price
– · CHF 3,990 excluding tax (maker price); limited edition of 178 pieces
Case diameter
40.0 mm
Thickness
8.95 mm
Lug-to-lug
41.5 mm
Origin
Switzerland
Movement
Automatic
Caliber
Sellita SW300-1
Power reserve
approx. 56 h
Complications
Time only
Case shape
Cushion
Case colour
Natural / grey
Finish technology
Natural finish
Surface treatment
Brushed titanium case middle, with polished steel bezel, lugs and crown
Caseback
Steel
Bracelet / strap
Integrated bi-material bracelet: brushed titanium outer links with a polished steel oblong centre link, Torx screws at the case attachment, concealed spring-loaded butterfly clasp
Titanium bracelet
Standard
Crystal
Domed sapphire with anti-reflective treatment on both sides
Display back
No
Dial
Multi-layered: base stamped with a Metro City motif over a vertical satin brush, circular-brushed chapter ring with white LOUIS ERARD transfer, satin-brushed robot applique with a black LE emblem, and a satin-brushed Astro Boy applique with coloured printing
Dial colours
Black White
Lume
Blue-emission Super-LumiNova (SLN-C1) on the hour and minute hands and the LOUIS ERARD hour letters on the flange
Availability
Offered
Status
Current (limited edition of 178 pieces)
Not published
Weight Help verify
Medium confidence Verified Aug 2026 Source: Louis Erard (maker) / Monochrome
Facts are free to cite with a link.
Reader reviews & photosContribute photo or review
No reviews yet. Be the first to write one.
See it in the interactive guideGet new-watch alertsContribute a photo or review

Browse all titanium watch comparisons →

Similar titanium watches

Certina DS-7 Powermatic 80 TitaniumCertinaDS-7 Powermatic 80 Titanium$1,08039.0 mm9.94 mm thick93 gIntegrated braceletsame category · same style · similar size · similar thickness
CorumAdmiral 39 Skeleton Rainbow (Grade 5 Titanium)$56,00039.0 mm8.9 mm thickIntegrated braceletsame category · same style · similar size · similar thickness
Audemars PiguetRoyal Oak Perpetual Calendar Openworked 150th Anniversary (Titanium)$196,00041.0 mm9.9 mm thickIntegrated braceletsame category · same style · similar size · similar thicknessBianchet UltraFino B 1.618 Flying Tourbillon (Titanium Blue)BianchetUltraFino B 1.618 Flying Tourbillon (Titanium Blue)–40.0 mm8.9 mm thickIntegrated braceletsame category · same style · similar size · similar thicknessCorum Admiral 39 Skeleton (Grade 5 Titanium)CorumAdmiral 39 Skeleton (Grade 5 Titanium)–39.0 mm8.9 mm thickIntegrated braceletsame category · same style · similar size · similar thickness
CartierSantos de Cartier Large (Titanium)$11,50039.8 mm9.38 mm thickIntegrated braceletsame category · same style · similar size · similar thickness
HorageAutark$4,30039.0 mm10.05 mm thickIntegrated braceletsame category · same style · similar size · similar thickness
ChopardAlpine Eagle 41 SL Cadence 8HF (Titanium)$25,30041.0 mm9.75 mm thickIntegrated braceletsame category · same style · similar size · similar thickness

Alternatives to the Louis Erard 2340 Louis Erard x Astro Boy

Citizen Zenshin Super Titanium AutomaticCitizenZenshin Super Titanium Automatic$65040.5 mm11 mm thick103 gIntegrated braceletsame category · same style · similar size · same movement
TissotPRX Titanium 38mm$97538.0 mm10.98 mm thick85 gIntegrated braceletsame category · same style · similar size · same movementNivada Grenchen F77 TitaniumNivada GrenchenF77 Titanium$1,56037.0 mm12 mm thick86 gIntegrated braceletsame category · same style · similar size · same movement
MidoMultifort TV Big Date (Titanium)$1,58040.0 mm11.5 mm thick100 gIntegrated braceletsame category · same style · similar size · same movementChristopher Ward The Twelve 40 (Titanium)Christopher WardThe Twelve 40 (Titanium)$2,29540.0 mm41 gIntegrated braceletsame category · same style · similar size · same movementAlpina Alpiner Extreme Automatic TitaniumAlpinaAlpiner Extreme Automatic Titanium$2,79539.0 mm11.5 mm thickIntegrated braceletsame category · same style · similar size · same movement

More titanium watches from Louis Erard

Louis Erard 2300 Chronograph Sport (Titanium)Louis Erard2300 Chronograph Sport (Titanium)$3,70044.0 mm15 mm thickChronograph
Louis ErardExcellence Le Regulateur Tourbillon Louis Erard x Alain Silberstein Black–40.0 mm11.8 mm thickDress

Frequently asked questions

Is the Louis Erard 2340 Louis Erard x Astro Boy nickel-free?

No. At least one part that touches the skin is nickel-bearing steel (commonly the caseback or clasp), so the guide does not mark it nickel-free.

What grade of titanium is the Louis Erard 2340 Louis Erard x Astro Boy?

The Louis Erard 2340 Louis Erard x Astro Boy has a Titanium case, though its caseback is steel. It is recorded at medium confidence pending a maker-stated grade.

What size is the Louis Erard 2340 Louis Erard x Astro Boy?

It is 40.0 mm in diameter, 8.95 mm thick, 41.5 mm lug to lug, and water resistant to 50 m.

How much does the Louis Erard 2340 Louis Erard x Astro Boy cost, and is it available?

It is current-production; the guide does not list a price for it.

All titanium Louis Erard watches · Titanium integrated bracelet watches · All 1,330 watches

Learn: Titanium grades · Surface treatments · Why titanium scratches · How to read a spec

How we verify & grade · Image & Trademark Policy · Terms & Conditions