Hublot · Classic Fusion
Strap for Classic Fusion 45 Chronograph Titanium / Racing Grey / Rubber
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 diameter42 mm
Reference521.NX.7071.RX
FamilyClassic Fusion
MovementHublot caliber HUB1143
Hours, Minutes, Small Seconds | Date | Chronograph
CaseTitanium, Resin
Straps for the Classic Fusion 521.NX.7071.RX
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 521.NX.7071.RX, seen from the bench
The Hublot Classic Fusion 521.NX.7071.RX features a grade 5 titanium and composite resin case with a 42mm diameter and HUB1143 manufacture movement. The chronograph watch includes hours, minutes, small seconds at 9 o'clock, date, and integrated stopwatch function. The 20mm lug width accommodates standard straps compatible with the entire 42mm Classic Fusion range, designed for straight and squared lug 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