Hublot · Classic Fusion
Strap for Classic Fusion 45 Chronograph Titanium / Blue / Bracelet
Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
20mm
Lug width20 mm
Case diameter45 mm
Reference520.NX.7170.NX
FamilyClassic Fusion
MovementHublot caliber HUB1143
Hours, Minutes, Small Seconds | Date | Chronograph
CaseTitanium, Resin
Straps for the Classic Fusion 520.NX.7170.NX
Selected for the 20 mm lug width · workshop selection
Black Alligator Strap with Light Blue Edges€210
Black Alligator Strap with White Edges€210
Millenium Cognac Alligator Strap€270
Matte Blue Alligator Strap€270
Green Rubberized Alligator Strap with Ecru Tribal Stitching€185
The Classic Fusion 520.NX.7170.NX, seen from the bench
The Hublot Classic Fusion 520.NX.7170.NX embodies the brand's Art of Fusion philosophy through a titanium and resin construction that balances structural rigidity with contemporary materials. The 45 mm case features a matte dark aesthetic combining brushed titanium and black resin, housing the HUB1143 calibre movement with hours, minutes, small seconds at 9 o'clock, date and chronograph function. The native 20 mm lug width is specifically designed by Hublot to integrate the strap attachment proportionally with the case's curvature, requiring compatible straps that respect the original anse geometry.
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