Replica Speedmaster 323.10.40 Guide | Specs, Dial & Bracelet

The Speedmaster 323.10.40 is the reference most people picture when they hear the word Moonwatch: a 42 mm steel chronograph on a matching bracelet, black step dial, tachymeter bezel and a hand-wound movement under a domed hesalite crystal. This replica version is built for buyers who want that exact silhouette and wrist presence without the collector-level cost of an original. Below is what the piece actually delivers, from case finishing to how the bracelet settles in after a few weeks of wear.

What defines the Speedmaster 323.10.40 reference?

It is the classic professional Moonwatch configuration: a 42 mm asymmetrical steel case, hesalite crystal, black dial with an applied logo, and the three-register chronograph layout driven by a manual-wind movement. The 323.10.40 code identifies the version supplied on the full steel bracelet rather than a strap.

Key Features

• 42 mm stainless steel case with the correct asymmetrical lugs and twisted caseband profile
• Black step dial with applied metal logo, baton hands and three recessed sub-dials
• Dot-over-ninety tachymeter bezel with a black insert and crisp printed scale
• Domed hesalite-style crystal that gives the warm, slightly soft reflections of the original
• Manual-wind chronograph movement with running seconds, 30-minute and 12-hour counters
• Steel bracelet with brushed outer links, polished centre links and a signed folding clasp
• Screw-down caseback with the seahorse and flight-qualification engraving
• Everyday water resistance suitable for handwashing and rain, not for swimming or diving

Materials and specifications

The case and bracelet are cut from 316L stainless steel, with brushed lug tops and flanks that transition to a polished bevel along the caseband. The dial is a matte black step design with printed minute track, applied hour markers and lume-filled hands that read clearly in low light. Case diameter is 42 mm, thickness sits at roughly 14 mm and the lug width is 20 mm, so most aftermarket straps fit without modification. The chronograph is operated by the usual pushers flanking a signed crown, and the bezel insert is aluminum for the correct period look.

How does it wear day to day?

The bracelet articulates well at the links and tapers gently toward the clasp, so the watch sits flat on the wrist rather than rocking. At 42 mm it suits most wrists from about 6.5 inches upward, and the flat caseback keeps it comfortable under a shirt cuff.

What about shipping and returns?

Orders are packed discreetly and dispatched within a few business days, with tracking provided once the parcel moves. Each watch ships in a protective box with the crystal and bracelet film intact, and returns are accepted within the stated window as long as the piece is unworn and all protective materials are still in place.