The Audemars Piguet Royal Oak Jumbo Extra-Thin Openworked 16204BC is the white-gold version of the openworked 16204 family, according to watch publication Fratello. Audemars Piguet’s official material confirms the family’s dedicated, ultra-thin Calibre 7124, but the official pages available for this article do not provide a specification sheet for the exact BC reference. That distinction matters: some widely quoted case details are confirmed for other gold versions, not directly by AP for the 16204BC.
What the reference 16204BC means
AP uses 16204 for its Royal Oak Jumbo Extra-Thin Openworked family. The BC designation identifies a white-gold variation in Fratello’s coverage of the watch; AP’s official pages found here confirm the broader 16204 family but do not offer a dedicated 16204BC product page. The exact metal identification is therefore attributable to secondary coverage rather than an exact-reference AP specification.
“Jumbo” is a heritage name for the 39 mm Royal Oak extra-thin models, not a claim that this watch is physically oversized by current standards. The openworked 16204 family entered the collection in the 2022 Royal Oak 50th-anniversary context, initially in stainless steel and 18-carat pink gold. AP’s Jumbo history describes that lineage and the 2022 launch.
Movement and openworked construction
Calibre 7124
The family uses Calibre 7124, a selfwinding movement designed for the openworked watch. AP gives the movement’s thickness as 2.7 mm. This is the movement’s thickness, not the case’s overall thickness. AP describes the mechanism as dedicated to the openworked model; it should not be confused with Calibre 7121 in the date-equipped 16202 family. The latter distinction is relevant when comparing the two: the openworked 16204 design omits a date indication in the 2022 steel and pink-gold versions, according to AP’s heritage article.
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Machining and hand finishing
AP says it uses computer numerical control machining and electric discharge machining for preliminary shaping, followed by hand finishing. The brand reports 324 hand-finished V-angles. These details describe the construction and finishing approach for the openworked family, rather than a separate BC-only process.
AP’s collection page describes the pink-gold version’s openworked bridges and mainplate as slate grey, paired with a light-grey openworked barrel. That is a description of the pink-gold configuration, not a confirmed dial or movement-color specification for the white-gold BC.
Rank #2
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What is—and is not—confirmed about the 16204BC’s specifications
Fratello reports a 39 mm diameter and 8.1 mm thickness for the white-gold 16204BC. AP independently lists those dimensions, along with 50 m water resistance, for the yellow-gold 16204BA configuration. Because that is a different precious-metal reference, its full specification should not be silently transferred to the BC.
| Detail | What is established |
|---|---|
| Case material | White gold for the 16204BC, as identified by Fratello’s coverage; no exact-reference AP specification page was found. |
| Case diameter and thickness | Fratello reports 39 mm and 8.1 mm for the BC. AP lists the same figures for the yellow-gold 16204BA, not the BC: official 16204BA page. |
| Water resistance | 50 m is stated by AP for the 16204BA yellow-gold configuration; a BC-specific official figure was not established. |
| Movement | Calibre 7124 is confirmed for the 16204 family by AP; the official collection page describes it as a dedicated selfwinding openworked mechanism. |
| Power reserve, jewels and parts | AP lists 52 hours, 31 jewels and 211 parts for the 16204BA and its Calibre 7124. These are not independently confirmed here as BC-specific figures. |
| Current price, stock and production status | Not established by the official pages or secondary coverage cited here. |
AP’s current official example cited here is the yellow-gold 16204BA.OO.1240BA.01. Its figures are useful family context, but they do not establish that every case specification or availability detail applies to the white-gold BC.
Rank #3
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- [Waterproof] Water resistant to 50m (165ft) -suitable for short periods of recreational swimming and showering, but not diving or snorkeling
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Availability and buying considerations
No current 16204BC price, stock status, production status, or Amazon listing was verified in the sources cited here. AP’s general collection information points readers toward its boutiques and AP Houses for exploration and expert servicing, but that does not confirm whether this particular reference is currently available. Anyone considering a purchase should ask AP or an authorized retailer to verify the exact reference, metal, current specification sheet, availability, and seller or service provenance for the individual watch.
Quick Recap
Rank #4
- [Luxurious Mechanical Watch] High quality hollow mechanical watch appearance retro gorgeous, exquisite carving and design of the golden appearance of the European nobility more highlight your noble identity extraordinary taste, to bring you a pleasant luxury experience
- [Mechanical Movement] There's no need to worry if the battery is dead because this watch has manual self-winding. Please consider that mechanical watches that require manual winding can only keep time for a short time after winding. To prevent running or inaccurate time, it is advised that you verify the time periodically and wind up the chain 15–20 times.
- [Waterproof] Water resistant to 50m (165ft) -suitable for short periods of recreational swimming and showering, but not diving or snorkeling
- [Ideal as a Gift] This beautiful retro-style watch can be worn on any occasion or given as a gift to your father, brother, partner, or boyfriend. At weddings and any holiday gatherings, it can be a really appreciated and elegant gift.
- [Professional After-Sale Service] Please contact us if you need any additional details about our watches. We will be happy to answer and help you anytime.
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.
