Big Bang Unico Mat Blue Dial 18K King Gold 42mm 441.OX.5181.RX
Big Bang Unico Mat Blue Dial 18K King Gold 42mm 441.OX.5181.RX
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Big Bang Unico Mat Blue Dial 18K King Gold 42mm 441.OX.5181.RX
ABOUT THIS PRODUCT
ABOUT THIS PRODUCT
The Hublot 421.OX.5180.RX is a remarkable timepiece that embodies the brand's commitment to innovation, craftsmanship, and luxury. At its heart lies the HUB1280 UNICO Manufacture Self-winding Chronograph Flyback Movement with Column Wheel, a marvel of engineering that offers exceptional precision and reliability. This outstanding movement boasts a robust power reserve of 72 hours, ensuring that the watch remains functional even after a period of inactivity.
DELIVERY TIMES
DELIVERY TIMES
Processing and Estimated Delivery Times
- Order processing: 3–5 business days for authenticity
checks, quality control, and dispatch. - Estimated delivery times (from shipment date):
Express shipping (domestic, U.S.): 12–18 business days.
International: 15-25 business days
(may vary depending on destination and customs). - Note: High-demand releases, limited editions, or custom orders may require additional processing time. You will receive an email with tracking details once your order ships.
Multiple Addresses
We do not support splitting a single order to multiple shipping addresses. Please place separate orders for different delivery addresses.
PO Boxes & Military Addresses (APO/FPO)
We can deliver to PO Boxes and APO/FPO addresses. Delivery times may vary by destination.
International Duties & Taxes (VAT)
International orders are shipped DDU (Delivered Duty Unpaid).
We do not collect VAT, customs duties, or import fees at checkout.
Any applicable taxes, duties, or customs fees are the recipient’s responsibility upon delivery.
Customs policies vary by country; please check with your local customs office for potential fees or restrictions before ordering.
NOTE: Please keep in mind that purchasing means accepting all the terms mentioned above.
REFUND POLICY
REFUND POLICY
100% Secure payment with SSL Encryption.Orders can be canceled within 3 hours of purchase or before seller confirmation — whichever comes first. After that, cancellations are not possible.Returns or exchanges are accepted within 3 days of delivery if items are unused, in original condition and packaging.Custom or personalized products are non-returnable.For any issues, please contact us — we’ll help resolve them quickly.
Frequently Bought Together

Sizing Chart
HOW TO MEASURE
1. Place a sheet of paper on the floor and against a wall.
2. Make sure you are wearing the same socks that you would normally wear with this type of shoe.
3. Wearing these socks, stand on the sheet of paper with your foot perpendicular to the wall and your heel against the wall.
4. Then use a pen to draw a line just in front of your big toe. Repeat for both feet and take the longer distance to determine your size.
5. Using a ruler, measure the distance between the wall and the line you drew to find your size.
Note:
- The length in the size chart is the length of the insole.
- To ensure a comfortable fit, the insole length should be about 0.5 - 1 cm longer than your foot length.
- If you are between two sizes, we recommend choosing the larger size for a comfortable fit.
*This Trainer model runs smaller than usual. Please check the size chart or choose one size up*