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Hublot Big Bang Unico 45 Sky Blue: Specs, Edition Size and Launch Price

Hublot’s 2020 Big Bang Unico 45 Sky Blue pairs a 45 mm light-blue ceramic case and skeletonized dial with a flyback chronograph; only 100 were made.
Estimate2–3 min Catalogued SpecialistWatchRanker Team
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The Hublot Big Bang Unico 45 Sky Blue is a 2020 limited edition of 100 watches, built around a 45 mm light-blue ceramic case, a skeletonized dial and an automatic flyback chronograph. Its reported U.S. launch price was $21,500 in 2020; that historical list price is not a current valuation.

What is the Big Bang Unico 45 Sky Blue?

Introduced in 2020, the Sky Blue is a limited colorway in Hublot’s Big Bang Unico 45 line. Its defining combination is a large 45 mm case in light-blue ceramic with white accents, an openworked dial and the Unico flyback chronograph. Watchonista’s July 21, 2020 launch coverage and Chrono24’s model overview both report a production limit of 100 pieces.

Specifications

Specification Reported details
Case 45 mm; light-blue ceramic with white accents, per 2020 launch coverage.
Dial Skeletonized, with rhodium-plated, luminescent indications, per Watchonista’s 2020 report.
Movement MHUB1242 UNICO manufacture self-winding column-wheel flyback chronograph, as named by Watchonista in 2020.
Power reserve 72 hours, as reported by Watchonista in 2020.
Water resistance 10 ATM / 100 m, as reported by Watchonista in 2020; Chrono24 also lists 100 m.
Edition size 100 watches, according to Watchonista’s 2020 coverage and Chrono24’s model guide.
Strap White textile strap shown in launch imagery; a sky-blue-and-white rubber strap with titanium deployant clasp was described as an option by Watchonista.

How the flyback chronograph works

A flyback chronograph lets the wearer reset and restart a running chronograph with one press, rather than stopping it first and then resetting it. The function is useful for timing consecutive intervals. Watchonista identifies this edition’s movement as the MHUB1242 UNICO, a self-winding, column-wheel flyback chronograph. Caliber naming can vary across Big Bang Unico generations, so this designation should be understood as the one reported specifically for the Sky Blue launch, not generalized to every Unico model.

Launch price and present-day availability

Watchonista and Chrono24 report a U.S. launch list price of $21,500 in 2020. That figure is historical context only: it does not establish what an example should cost now. A July 2026 article by Gia Bảo likewise cautions against using the launch figure as a present-day valuation. Current asking prices can differ from completed-sale prices, and a defensible estimate would need recent sales data plus the watch’s condition, provenance and market geography.

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Chrono24 has an exact-model page that includes a listing. A marketplace listing is not evidence of authorized-dealer status, universal availability or a reliable market range; inventory and asking prices can change.

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What makes this edition distinctive?

The Sky Blue’s identity comes from the pairing of a vividly colored ceramic case with the exposed mechanics of the skeletonized dial, rather than from a different case size or a claim of improved performance. The 45 mm format, flyback function and limited 100-piece run are the clearest practical and collectible details to weigh. The available launch reporting does not establish comparative accuracy, comfort or value against competing watches.

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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

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