Hublot · Big Bang

Strap for Big Bang Unico 44 Full Magic Gold

Takes 24 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width24 mm
Case diameter44 mm
Reference421.MX.1130.RX
FamilyBig Bang
MovementHublot caliber HUB1280 Hours, Minutes | Date | Chronograph, Flyback, Column wheel
CaseTitanium, Ceramic, Magic Gold

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Big Bang 421.MX.1130.RX

Selected for the 24 mm lug width · workshop selection

All 24 mm straps →

The Big Bang 421.MX.1130.RX, seen from the bench

The Big Bang was introduced by Hublot in 2005 as a luxury sports chronograph. It features the automatic HUB1280 caliber with flyback chronograph and column-wheel functions. The 421.MX.1130.RX reference presents hour, minute, date, and chronograph indications with a column-wheel mechanism.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only