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Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteThe Hublot Spirit of Big Bang Tourbillon 5-Day Power Reserve is a 42 mm family of skeleton tourbillon watches with a hand-wound movement and a manufacturer-stated minimum power reserve of 115 hours—about five days. Hublot’s US catalog lists five versions, with suggested retail prices of $109,000 for four ceramic models and $169,000 for the Black Sapphire; those prices exclude VAT and are not resale or transaction prices.
What the watch is
This is a collection rather than a single reference. The watches share the Spirit of Big Bang tonneau-shaped case format and HUB6020 manual-winding power-reserve skeleton tourbillon concept. Hublot states a minimum 115-hour reserve for the named variants, which explains the “5-Day” wording. These are manufacturer specifications, not independent test results.
The official US catalog lists all five variants in 42 mm. Case material and color distinguish the versions, and the Black Sapphire has a higher listed US suggested retail price than the four ceramic models.
Variants and specifications
| Variant | Reference | Case material | Power reserve and water resistance |
|---|---|---|---|
| Black Magic 42 mm | 645.CI.1137.NR | Microblasted and polished black ceramic | Minimum 115 hours; 30 m / 3 ATM |
| Red Magic 42 mm | 645.CF.8513.NR | Polished red ceramic | Minimum 115 hours; 30 m / 3 ATM |
| Sky Blue Ceramic 42 mm | 645.EX.5123.NR | Polished sky-blue ceramic | Minimum 115 hours; 30 m / 3 ATM |
| Yellow Magic 42 mm | 645.CY.4723.NR | Polished yellow ceramic | Minimum 115 hours; 30 m / 3 ATM |
| Black Sapphire 42 mm | 645.JB.4934.RX | Black sapphire crystal | Minimum 115 hours; 30 m / 3 ATM |
Specifications for the ceramic variants appear on Hublot’s official Black Magic, Red Magic, Sky Blue Ceramic, and Yellow Magic product pages. The Black Sapphire details and collection listing are in Hublot’s US Spirit of Big Bang catalog.
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Black Magic as a concrete example
Reference 645.CI.1137.NR uses a 42 mm black ceramic case and the HUB6020 manual-winding power-reserve skeleton tourbillon movement. Hublot lists a sapphire crystal dial, a minimum 115-hour power reserve, and water resistance of 30 m / 3 ATM. The listed strap setup combines black fabric with Velcro and a microblasted ceramic buckle, plus an additional black-lined rubber strap. Its clasp is black ceramic and black-plated titanium.
US catalog prices
| Variant(s) | Hublot US suggested retail price | Price qualification |
|---|---|---|
| Black Magic, Red Magic, Sky Blue Ceramic, Yellow Magic | USD 109,000 each | US catalog figure; VAT excluded; year not stated |
| Black Sapphire | USD 169,000 | US catalog figure; VAT excluded; year not stated |
These are figures shown by Hublot’s US catalog, not independently verified amounts paid, market averages, or current resale values. The catalog does not establish prices or taxes for other countries, and its listed models or prices may change.
What to compare before choosing a reference
- Exact reference and material: Start with the reference number, not just the collection name. The ceramic models use distinct colors and finishes; Black Sapphire uses black sapphire crystal.
- Price in the relevant market: The figures above apply to Hublot’s US catalog and exclude VAT. They do not establish local taxes or a dealer’s transaction price.
- Strap configuration: Hublot describes fabric and rubber strap combinations across the cited ceramic variants, with variant-specific lining colors and ceramic buckles. Check the product page for the exact reference’s included configuration.
- Water resistance: Hublot gives a 30 m / 3 ATM rating for the cited variants. That rating alone does not establish suitability for a particular swimming or diving activity.
The published specifications support a comparison of size, materials, stated reserve, water-resistance rating, and catalog pricing. They do not establish real-world comfort, durability, accuracy, resale performance, or service cost.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Warranty wording
Hublot’s Black Magic page says, “Our confidence in every watch. Your assurance for 10 years,” and points to a “5+5 Warranty.” That promotional wording is not, by itself, a statement of unconditional coverage. The cited page does not provide the eligibility conditions or detailed terms needed to determine what a particular owner or watch qualifies for.
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Best Value
- Compatible Watch Models: Perfect Compatible with Hublot Big Bang 19mm×25mm×22mm Series Watches,
- Product Include: 1× replacement watch band(without metal buckle) + 1× strap removal tool+ 1×screwdrivers+ 2× Spring Bar+strap outer packaging. Using the included replacement tool, you can quickly install the strap.
- Select The Appropriate Width: Replacement for Hublot Big Bang 19mm×25mm×22mm. As the Picture , Measure the size near the strap buckle or the inside of the strap.
- High Quality Materials: High quality Leather material, waterproof and sweatproof, dust-free replacement compatible Hublot Big Bang 19mm×25mm×22mm watch strap
Rank #4
- Compatible Watch Models: Perfect Compatible with Hublot Big Bang 19mm×25mm×22mm Series Watches,
- Product Include: 1× replacement watch band with mental buckle+ 1× strap removal tool+ 1×screwdrivers+ 2× Spring Bar+strap outer packaging. Using the included replacement tool, you can quickly install the strap.
- Select The Appropriate Width: Compatible with Hublot Big Bang size (19mm×25mm×22mm) straps, Measure the size near the strap buckle or the inside of the strap.
- High Quality Materials: High quality Leather material, waterproof and sweatproof, dust-free. Compatible with Hublot Big Bang size (19mm×25mm×22mm) straps.
- Have any questions on how to choose the size, please contact customer service
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.
