Hublot · Classic Fusion

Strap for Classic Fusion 45 Chronograph Ceramic / Blue / Rubber

Integrated bracelet: measurements, the most common questions, and the way to a made-to-measure strap.

Integrated bracelet

The Hublot Classic Fusion 521.CM.7170.RX is designed with a bracelet integrated into the case. For a compatible made-to-measure strap, the Casati Milano atelier builds it on your watch.

Case diameter45 mm
Reference521.CM.7170.RX
FamilyClassic Fusion
MovementHublot caliber HUB1143 hours, minutes, small seconds | date | Chronograph
CaseTitanium, Ceramic, Resin

Spring bar

Swiss Standard universal spring bars

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

The Classic Fusion 521.CM.7170.RX, seen from the bench

The Classic Fusion represents Hublot's essential line, characterized by clean lines and balanced proportions. It features the automatic caliber HUB1143 with functions of hours, minutes, small seconds, date and chronograph. The case presents the characteristic fusion design with a screwed bezel and a crown integrated into the side profile.

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.

Request an appointment →

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