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Hublot Big Bang Unico Water Blue Sapphire 44 mm

Reference 421.JL.4890.RTItem PL130365

NewOriginal papersOriginal boxYear: 2026

Case: 44 mm · Sapphire Crystal
Movement: Automatic · HUB1280 UNICO
Dial: Transparent
Year: 2026

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Specifications

Brand: Hublot
Reference: 421.JL.4890.RT
Year: 2026
Original papers: Yes
Original box: Yes
Condition: New
Type: Men's Watch
Case material: Sapphire Crystal
Dial: Transparent
Diameter: 44 mm
Strap: Rubber
Clasp: Folding Clasp
Clasp material: Titanium
Movement: Automatic
Caliber: HUB1280 UNICO
Power reserve: 72 h
Crystal: Sapphire Crystal
Water resistance: 50 m
Functions: Date, small seconds, Chronograph, Flyback Function
Additional features: Skeletonised, Luminous Indices, Luminous Hands, Limited Edition

What does 50 m water resistance mean?

From 50 m (5 bar) water contact is fine — showering is possible, swimming from 100 m. The metre rating refers to the test pressure of the water-resistance test, not a diving depth.

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Description

The Hublot Big Bang Unico Water Blue Sapphire 44 mm (reference 421.JL.4890.RT) has a 44 mm sapphire crystal case and a transparent dial, on a rubber strap.

It is powered by an automatic movement, calibre HUB1280 UNICO, with 72 hours of power reserve. Functions: date, small seconds, chronograph and flyback function. Details: skeletonised, luminous indices, luminous hands and limited edition. Water resistant to 50 m.

Condition: new, 2026. Supplied with the original box and papers.

Checked by our specialist before it ships, and delivered fully insured.

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