Hublot Big Bang Unico Bi-Retrograde Chronograph 413.OX.4738.PR.KOB15 Burgundy Red Dial Rose Gold Case & Leather 45mm BRAND NEW Hublot Big Bang Unico Bi-Retrograde Chronograph 413.OX.4738.PR.KOB15…

1. What makes the Hublot Big Bang Unico Bi-Retrograde Chronograph 413.OX.4738.PR.KOB15 special?
This reference combines a rare bi-retrograde chronograph complication with a 45mm rose gold case and a distinctive burgundy red dial, all within a limited KOB15 special-edition variant. The bi-retrograde display — where chronograph hands sweep an arc then snap back to zero — is a visually dramatic mechanical feature rarely found in this price segment. Its collectibility is further enhanced by the special KOB15 designation that sets it apart from standard Big Bang Unico references.

2. What movement powers the Hublot 413.OX.4738.PR.KOB15?
The watch is powered by an automatic chronograph movement that drives the bi-retrograde complication, consistent with Hublot's Unico manufacture caliber platform used in the Big Bang Unico line. Hublot developed the Unico movement in-house to offer full manufacture credentials alongside the open architecture display characteristic of the line. For precise caliber specifications, we recommend consulting the official Hublot documentation included with this brand-new piece.

3. What is the case size and case material of reference 413.OX.4738.PR.KOB15?
The case measures 45mm in diameter and is crafted in rose gold, placing this watch firmly in the bold, wrist-dominant tradition of the Big Bang line. Rose gold lends the case a warm, lustrous tone that pairs beautifully with the burgundy red dial. The rose gold bezel echoes the case material, creating a cohesive and luxurious overall presentation.

4. Is the Hublot Big Bang Unico Bi-Retrograde Chronograph suitable for everyday wear?
While the 45mm rose gold case and precious metal construction make this watch a natural choice for formal occasions and events, many wearers do enjoy it daily given the durability of Hublot's engineering and the comfort of the leather strap. The leather strap in particular softens the wearing experience compared to a metal bracelet, helping the large case sit comfortably on the wrist. Ultimately it is a statement piece, and those who appreciate bold horological design often gravitate toward wearing it regularly.

5. What dial and strap does the 413.OX.4738.PR.KOB15 feature?
The dial is finished in a deep burgundy red with red indices, creating a bold and richly toned visual identity that is unique within the Big Bang catalogue. This is complemented by a leather strap that adds a refined, classical counterpoint to the otherwise avant-garde design. Together, the burgundy red dial and leather strap make this one of the most visually distinctive Big Bang Unico references available.

6. Is the Hublot 413.OX.4738.PR.KOB15 a good buy and how can I purchase it from Bizak & Co.?
As a brand-new, special-edition rose gold chronograph with a complex bi-retrograde complication, this reference represents genuine value for collectors seeking rarity, mechanical sophistication, and prestige materials in one package. Hublot's rose gold Big Bang Unico editions with special designations consistently attract strong collector interest. You can buy the 413.OX.4738.PR.KOB15 online at bizakandco.com or contact our team directly for a personalized consultation and to confirm availability.