The Hublot Big Bang, a watch that redefined the luxury sports watch landscape with its fusion of materials and bold design, often hides a surprisingly robust and reliable engine within its striking exterior: the Hublot Caliber HUB4100. While not entirely in-house developed, this movement represents a significant stage in Hublot's journey towards horological independence, offering a solid foundation upon which the brand built its reputation. This article will delve into the intricacies of the HUB4100, exploring its origins, specifications, performance, and its place within the larger context of Hublot's watchmaking history.
The Foundation: ETA 7750 and the HUB4100's Genesis
The HUB4100 is based on the venerable ETA 7750, a highly regarded automatic chronograph movement known for its reliability and widespread use in the watch industry. This is not a criticism; utilizing a proven base movement allowed Hublot to focus on integrating it seamlessly into their distinctive designs and adding their own finishing touches. The ETA 7750's architecture provides a solid framework for a chronograph, featuring a column-wheel mechanism for crisp and precise chronograph operation. This contrasts with some less expensive movements that use a cam system, often leading to a less satisfying feel.
However, the HUB4100 is more than just a re-branded ETA 7750. Hublot significantly modified and enhanced the base movement, adding their own aesthetic and functional touches. The modifications extend beyond simple cosmetic changes; they reflect a commitment to refining the performance and integrating the movement into the overall design philosophy of the Big Bang. While precise details regarding the exact modifications are not always publicly available, the end result is a movement that feels distinctly Hublot.
Technical Specifications: Unpacking the HUB4100
The HUB4100 is an automatic (self-winding) movement, meaning it winds itself through the motion of the wearer's wrist. This eliminates the need for manual winding, adding to its convenience. The movement boasts a total of 252 parts, a testament to the complexity of even a modified base movement like the ETA 7750. These parts work in concert to provide accurate timekeeping and the chronograph function.
The inclusion of 27 jewels is another key specification. Jewels, typically synthetic rubies, are strategically placed in the movement to reduce friction at points of high wear. This minimizes wear and tear, contributing to the longevity and accuracy of the timepiece. The use of 27 jewels is indicative of a movement designed for durability and reliable performance, even under demanding conditions. The "Swiss Made" designation further underscores the high standards of craftsmanship and quality control involved in the movement's production.
Functions: Beyond Basic Timekeeping
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