Hublot · Spirit of Big Bang

Strap for Spirit of Big Bang 45 Ceramic / Blue

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter45 mm
Reference601.CI.7170.LR
FamilySpirit of Big Bang
MovementHublot caliber HUB4700 Hours, Minutes, Small Seconds | Date | Chronograph, Column wheel
CaseTitanium, Ceramic, Resin

Spring bar

Swiss Standard universal spring bars

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

Straps for the Spirit of Big Bang 601.CI.7170.LR

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Spirit of Big Bang 601.CI.7170.LR, seen from the bench

The Spirit of Big Bang 45 Ceramic Blue (ref. 601.CI.7170.LR) features Hublot's distinctive barrel-shaped case in a 45 mm diameter, crafted from grade 5 titanium, black ceramic, and resin through their Art of Fusion process. It houses the HUB4700 chronograph movement with a column wheel, displaying hours, minutes, small seconds at 9 o'clock, and date at 4:30, offering over 50 hours of power reserve at 4 Hz frequency. The integrated lug measures exactly 20 mm in width.

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