Reference U13313121B1S1 gives this replica superocean u13313121b black a two-tone construction that immediately sets it apart from the all-steel Heritage models dominating the broader Superocean catalog. The combination of stainless steel with rose gold-toned accents on the bezel and crown adds a layer of visual warmth to the otherwise monochrome black dial. Paired with a black rubber strap rather than the usual mesh bracelet, the watch balances that bicoloured case with a sporty, utilitarian delivery system that keeps the overall weight manageable.

Case & Movement Specs

• Case material: stainless steel with rose gold-toned elements
• Dial: black with luminous applied markers
• Bezel: unidirectional rotating, black ceramic with rose gold accent ring
• Crystal: domed sapphire with anti-reflective coating
• Strap: black rubber with deployant clasp
• Movement: automatic
• Functions: hours, minutes, seconds, date

The rubber strap reduces overall weight compared to mesh or solid-link bracelets and handles salt water and sweat better than leather alternatives. The deployant clasp provides secure closure with a low-profile design that sits flat against the underside of the wrist.

Caliber Breakdown

The automatic movement inside maintains a 28,800 vph frequency and delivers reliable timekeeping without the added bulk of a chronograph module. Keeping the movement simple allows for a slimmer case profile, which matters on bicoloured Heritage references where case thickness directly affects how the gold accents are perceived on the wrist. For a full-steel green-dial alternative with more visual volume, see the green Superocean 44mm A17376211L2S1. Both belong to the Superocean family, but the two-tone Heritage and the oversized steel diver serve completely different styling intentions.

How It Compares

Bicoloured dive watches on rubber straps occupy a narrow space between dressy two-tone bracelet models and full-steel sport pieces. The rubber strap keeps the overall character casual while the rose gold elements lift the presentation above pure tool-watch territory. This replica superocean u13313121b black handles that balance point cleanly for anyone wanting warmth and functional purpose combined in a single package on the wrist.