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Hublot Big Bang Unico Yellow Sapphire 42mm 441.JY.4909.RT
  • Hublot Big Bang Unico Yellow Sapphire 42mm 441.JY.4909.RT
Hublot Big Bang Unico Yellow Sapphire 42mm 441.JY.4909.RT

Hublot Big Bang Unico Yellow Sapphire 42mm 441.JY.4909.RT

$76,199.00

*As with all fine timepieces, prices and availability are subject to market conditions and do not constitute a binding agreement.

By Hublot

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Hublot Big Bang Unico Yellow Sapphire 42mm 441.JY.4909.RT

Hublot Big Bang Unico Yellow Sapphire 42mm 441.JY.4909.RT

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Hublot Big Bang Unico Yellow Sapphire 42mm 441.JY.4909.RT

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Hublot Big Bang Unico Yellow Sapphire 42mm 441.JY.4909.RT · $

  • A fully refundable $200 deposit secures this watch and confirms your order.
  • The balance of $ is paid by bank wire — instructions are emailed to you right after checkout.
  • Market prices move: if the price changes or we cannot secure the piece, your deposit is refunded in full.
  • A specialist confirms your order personally within hours; your watch ships fully insured once the wire clears.
  • Complimentary bracelet sizing before shipping — how to measure your wrist.

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The Hublot Big Bang Unico Yellow Sapphire 441.JY.4909.RT is a brand-new limited-edition 42mm automatic watch encased entirely in transparent yellow sapphire crystal, featuring a black index and Arabic-numeral dial paired with a matching sapphire crystal bezel and black rubber bracelet. This rare collector's piece represents Hublot's mastery of high-tech case materials, delivering a bold, translucent aesthetic that is instantly recognizable on the wrist.

Reference 441.JY.4909.RT stands apart through its striking yellow sapphire crystal construction — one of the most demanding materials in modern watchmaking — combined with Hublot's signature Unico architecture for an effect that is simultaneously avant-garde and technically formidable. Contact Bizak & Co. today to secure this limited-edition Hublot Big Bang Unico Yellow Sapphire and buy online with confidence from an authorized luxury watch source.

Compare it across every Big Bang Unico reference we carry, or browse the full Hublot collection at Bizak & Co.

Buy this Big Bang Unico, trade in your current watch, or sell us yours. Contact Bizak & Co. to make an offer or request a fair-market valuation.

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The Hublot Big Bang Unico Yellow Sapphire 441.JY.4909.RT is one of the most visually arresting timepieces in contemporary Swiss watchmaking — a limited-edition 42mm watch whose entire case is machined from transparent yellow sapphire crystal. Hublot introduced the sapphire-cased Big Bang as a tour de force of material science, and the yellow variation pushes that concept even further by infusing the case with a vivid golden hue that glows on the wrist.

Sapphire crystal is second only to diamond in hardness, registering 9 on the Mohs scale, which means the case of the 441.JY.4909.RT offers extraordinary scratch resistance while remaining completely see-through. Machining sapphire into the complex, multi-part architecture of the Big Bang case demands hundreds of hours of precision grinding, making each yellow sapphire Big Bang a genuine technical achievement in its own right.

The dial of this reference is finished in black and features a combination of index markers and Arabic numerals, creating a high-contrast composition that reads cleanly through the transparent yellow case. The sapphire crystal bezel echoes the case material seamlessly, while the black rubber bracelet — a Hublot hallmark since the original Big Bang of 2005 — grounds the look and provides a supple, comfortable fit suited to the 42mm diameter.

Powering the watch is an automatic movement, consistent with the Unico line's commitment to in-house mechanical manufacture. The Unico caliber family is celebrated for its flyback chronograph architecture and the column-wheel and horizontal-clutch construction visible through the movement's bridges — details that enthusiasts can appreciate through the sapphire exhibition of the case itself on certain configurations.

Owning the Hublot Big Bang Unico Yellow Sapphire 441.JY.4909.RT means possessing a limited-edition collectible that is simultaneously a feat of engineering and a wearable sculpture. At Bizak & Co., this reference is offered brand new and complete, providing collectors and enthusiasts alike the assurance of full manufacturer documentation. Reach out to our team at bizakandco.com to buy this exceptional Hublot Big Bang online or to learn more about availability and pricing.
Technical Details

Reference Number 441.JY.4909.RT

Model Family Big Bang Unico

Movement Automatic

Case Material Sapphire

Bracelet Material Rubber

Dial Black with index and Arabic numerals

Case Dimension 42mm

Year

Condition Brand New

Box & Papers Full Set

FAQ

1. What makes the Hublot Big Bang Unico Yellow Sapphire 441.JY.4909.RT special?
Reference 441.JY.4909.RT is a limited-edition Big Bang Unico whose 42mm case is machined entirely from yellow sapphire crystal — one of the hardest and most technically demanding case materials in watchmaking. The vivid yellow hue combined with the case's full transparency creates a wrist presence unlike virtually any other watch on the market.

2. What movement powers the Hublot Big Bang Unico 441.JY.4909.RT?
The 441.JY.4909.RT houses an automatic movement in keeping with the Unico line's in-house manufacture philosophy. The Unico caliber family is renowned for its integrated flyback chronograph mechanism and column-wheel construction.

3. What is the case size of the Hublot Big Bang Unico Yellow Sapphire?
The Hublot Big Bang Unico Yellow Sapphire 441.JY.4909.RT measures 42mm in diameter, placing it in the mid-size tier of the Big Bang family. This size offers strong wrist presence while remaining versatile across a range of wrist sizes.

4. Is the Hublot Big Bang Unico Yellow Sapphire suitable for everyday wear?
While the yellow sapphire case is extremely scratch-resistant thanks to the hardness of the material, this is a limited-edition collector's piece that many owners choose to reserve for special occasions. It is best appreciated by enthusiasts who value avant-garde design and rare materials.

5. What are the dial and material details of the 441.JY.4909.RT?
The dial features a black background with index markers and Arabic numerals for clear legibility, set within a fully transparent yellow sapphire crystal case. The bezel is also fashioned from sapphire crystal, and the watch is fitted with a black rubber bracelet that is both comfortable and characteristically Hublot.

6. How can I buy the Hublot Big Bang Unico Yellow Sapphire 441.JY.4909.RT from Bizak & Co.?
This reference is available brand new at Bizak & Co., complete with box and papers, through our website at bizakandco.com. Contact our team directly to confirm availability, discuss pricing, and complete your purchase of this rare limited-edition Hublot with full confidence.

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Every watch is checked by us before shipping.

5 Years Warranty

Every watch you buy from us is backed by our 5-year warranty—because luxury should come with long-term peace of mind.

If anything goes wrong mechanically due to a manufacturing issue, we’ll take care of it. No stress. No surprises.

Because trust isn’t built in a transaction—it’s built over time.

90 Day Return Policy

Our costumers trust us and we trust them. That's why we're boldly presenting the best return policy in the industry.

We take all the risk so you don't have to.

Signature personal delivery service

For high-value orders, we offer our exclusive Signature Personal Delivery—where one of our team members personally flies out to hand-deliver your watch.

Because some pieces deserve more than just shipping—they deserve a handshake.

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