🔹 Overview
The H Spirit of Big Bang Titanium 45mm embodies the bold DNA of the Big Bang collection while adopting a distinctive tonneau-shaped case. Built from lightweight titanium with satin-finished and polished surfaces, it combines modern architecture with mechanical sophistication. The skeletonized sapphire dial exposes the advanced HUB4700 chronograph movement, making this watch a true expression of H’s technical artistry and avant-garde design.

💎 Key Specifications
Case Size: 45 mm
Case Thickness: 14.50 mm
Case Material: Satin-finished and polished titanium with sapphire crystal case back
Bezel: Satin-finished, polished and microblasted titanium with 6 H-shaped screws
Crystal: Sapphire with anti-reflective treatment
Water Resistance: 100 m / 330 ft
Dial: Transparent sapphire crystal revealing skeletonized movement

⏱️ Movement
Caliber: HUB4700, automatic self-winding skeleton chronograph
Rotor: Tungsten openworked rotor with Hublot design
Display: Calendar at 4:30
Components: 278
Jewels: 31
Escapement: Swiss lever
Frequency: 5 Hz (36,600 vph)
Power Reserve: 50 hours

✅ Conclusion
The H Spirit of Big Bang Titanium 45mm stands out with its modern tonneau case, lightweight titanium construction, and skeletonized sapphire dial. Powered by the high-frequency HUB4700 caliber, it delivers precise chronograph performance with a robust 50-hour power reserve. Stylish yet technical, this watch blends everyday wearability with bold design, making it a compelling choice for collectors seeking something beyond the ordinary.