The 641.CI.7170.LR reference number immediately identifies a specific and highly sought-after timepiece within Hublot's prestigious collection: the Spirit of Big Bang Chronograph Automatic in a striking ceramic blue. This article will delve deep into the intricacies of this watch, exploring its technical specifications, design elements, the history of the Spirit of Big Bang line, and its place within the broader luxury watch market. We will also examine its various online designations, such as Hublot Spirit of Big Bang 641.CI.7170.LR, Hublot 641.CI.7170.LR Spirit Of Big Bang Ceramic, and Hublot Spirit of Big Bang Ceramic Blue 42mm, to understand the different ways this watch is referenced and marketed.
The Heart of the Beast: The Caliber HUB4700
At the core of the 641.CI.7170.LR lies the impressive Caliber HUB4700. This automatic chronograph movement, based on the renowned Zenith El Primero, represents a significant achievement in horological engineering. With a frequency of 36,600 vibrations per hour (vph), it offers exceptional precision and accuracy. The high frequency contributes to the smooth and precise operation of the chronograph function, ensuring accurate timing of short intervals. Composed of 278 meticulously crafted parts and featuring 31 jewels, the HUB4700 showcases Hublot's commitment to both performance and intricate craftsmanship. While the exact power reserve isn't explicitly stated in the provided information, the El Primero's base movement typically boasts a power reserve of around 50 hours. This indicates that the 641.CI.7170.LR likely offers a similar power reserve, allowing for consistent timekeeping without the need for frequent winding. The integration of the Zenith El Primero base movement is a testament to Hublot's willingness to collaborate with and leverage the expertise of other leading watchmakers, resulting in a movement that combines precision and reliability.
A Fusion of Style and Substance: Design and Aesthetics
The 641.CI.7170.LR distinguishes itself not only through its robust movement but also through its striking design. The Spirit of Big Bang collection, to which this watch belongs, is known for its distinctive fusion of classic and modern aesthetics. The case, measuring 42mm in diameter, is crafted from high-tech ceramic in a captivating blue hue. Ceramic is chosen not only for its aesthetic appeal but also for its exceptional scratch resistance and lightweight properties. The deep blue ceramic provides a sophisticated and contemporary look, perfectly complementing the intricate detailing of the watch face.
The case's distinctive tonneau shape, a hallmark of the Spirit of Big Bang line, further contributes to its unique character. This unconventional shape distinguishes it from more traditional round-cased chronographs, offering a bolder and more contemporary aesthetic. The integration of the chronograph pushers and crown seamlessly complements the overall design, ensuring both functionality and visual harmony. The sapphire crystal, providing scratch resistance and clarity, allows for an unobstructed view of the meticulously finished movement.
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