Hublot Spirit of Big Bang Titanium Blue Ceramic (Ref. 642.NX.7170.RX)

The Hublot Spirit of Big Bang Titanium Blue Ceramic Ref. 642.NX.7170.RX is a bold, contemporary automatic chronograph combining Hublot’s distinctive tonneau-shaped case architecture with lightweight titanium construction and an intricate skeletonized dial.

Its blue skeletonized sapphire dial exposes much of the mechanical architecture beneath while maintaining strong legibility through applied hour markers and luminous hands. Blue accents throughout the dial complement the matching rubber strap, creating the modern and technical aesthetic associated with Hublot’s Spirit of Big Bang collection.

At its heart is the automatic Hublot HUB4700 skeleton chronograph movement, a high-frequency mechanical caliber operating at 36,000 vibrations per hour and offering approximately 50 hours of power reserve. The movement can be viewed from both the openworked dial and sapphire exhibition caseback, emphasizing the watch’s mechanical character.

The sculpted 42mm titanium case combines satin-finished and polished surfaces, delivering substantial wrist presence while remaining lightweight and comfortable. A fixed titanium bezel, sapphire crystal, integrated blue structured rubber strap, and titanium deployant clasp complete the sporty yet luxurious design.

This 2021 example is presented in very good condition, showing light signs of careful wear, and comes as a full set with its original box and papers. A distinctive Hublot for collectors seeking avant-garde design, lightweight construction, and a highly technical skeletonized chronograph.

Key Features

• Reference: 642.NX.7170.RX

• Case Size: 42 mm

• Case Material: Titanium

• Bezel: Fixed titanium bezel

• Dial: Blue skeletonized sapphire dial

• Movement: Hublot HUB4700 automatic skeleton chronograph

• Functions: Hours, minutes, small seconds, chronograph, date

• Crystal: Sapphire crystal

• Water Resistance: 100 m / 330 ft

• Power Reserve: Approximately 50 hours

• Strap: Blue structured rubber strap

• Clasp: Titanium deployant buckle clasp

• Caseback: Sapphire exhibition caseback

• Condition: Very good – light wear

• Limited Edition: No

Included in Sale

• Original Hublot box

• Original papers

• Additional accessories as pictured

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