Unworn, Hublot Big Bang Original Unico Titanium, Ref# 431.NX.1370.RX, box and papers.

Hublot Big Bang Original Unico Titanium, ref. 431.NX.1370.RX, evolves the iconic Big Bang design in a lightweight 43 mm Grade 5 titanium construction. The polished and satin-finished case surrounds a stamped satin-finished "Carbon Effect" dial, revealing the architecture of Hublot's in-house UNICO chronograph. Its structured titanium bezel and black rubber strap reinforce the model's technical character. Powered by the HUB1280 UNICO flyback chronograph with column wheel, it offers approximately 72 hours of autonomy. The open-worked display highlights the movement's mechanical depths and the signature Big Bang fusion of advanced materials and contemporary watchmaking. Grade 5 titanium provides an excellent strength-to-weight ratio, corrosion resistance and wear, while alternating polished and satin surfaces emphasize the case geometry. The flyback function allows the chronograph to be reset and restarted immediately with a single action. Condition: unworn in like-new condition, comes with original box and papers, including dated warranty documents.

TECHNICAL DATA

• MOVEMENT

• HUB1280 UNICO Manufacture self-winding chronograph
• Flyback chronograph with column wheel
• Fully integrated automatic architecture
• 354 components; five patented innovations
• Approx. 72-hour power reserve

• CASE

• Polished and satin-finished Grade 5 titanium
• Satin-finished and polished titanium bezel
• Structured pattern on bezel side
• Stamped satin-finished "Carbon Effect" dial
• Sapphire crystal with anti-reflective treatment
• Water resistance: 10 ATM / 100 m

• DIMENSIONS

• Case diameter: 43 mm
• Lightweight titanium construction

• STRAP

• Black structured rubber straps
• Titanium deployant buckle clasp
• Integrated sporty strap design

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