The Gerald Charles Maestro 8.0 Squelette is an 8.35 mm-thick, open-worked automatic watch with a micro-rotor, 50-hour power reserve and 10 ATM water-resistance rating. Gerald Charles lists the stainless-steel reference GC8.0-SQ-A-00 at $59,500 before sales tax; its 18K rose-gold 4N counterpart, GC8.0-RG-06, is listed at $87,000. Those are the brand’s published specifications and displayed prices, not independent test results.
What the Maestro 8.0 Squelette is
Gerald Charles announced the Maestro 8.0 Squelette on 19 May 2022 and credits Octavio Garcia with its design. The launch material describes a celestial sky-chart theme and an open-worked construction developed with Vaucher for the automatic calibre. Garcia said: “The key to Federico’s vision for Gerald Charles is to respect the foundation put in place by Mr. Gerald Genta while projecting the brand into the future”. Gerald Charles’ launch release discusses the design and the production challenges of the skeletonized construction.
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Case and movement specifications
The stainless-steel model uses a hand-polished, medical-grade 316L steel case. The brand describes it as asymmetric and polygonal, with a screw-down crown, sapphire crystals and a bespoke gasket. Its published dimensions are:
- Width: 39.00 mm
- Length: 41.70 mm
- Thickness: 8.35 mm
- Entrecorne: 22.00 mm
Gerald Charles names the movement Swiss Manufacture Caliber GCA8000. Its open-worked architecture exposes a decentered 22K rose-gold 4N micro-rotor and finished bridges: the dial-side bridge is vertically brushed in grey anthracite NAC, while other bridges are sandblasted and feature diamond-cut, polished 45-degree anglage. The manufacturer lists these calibre details:
#1 Best Overall
- Automatic winding with micro-rotor
- Central hours and minutes
- 160 components
- 30.00 mm diameter and 2.60 mm total thickness
- 21,600 A/h (3 Hz)
- 50-hour power reserve
- 5G shock resistance, which Gerald Charles says was tested with a five-axis robotic arm, and an Incabloc anti-shock system
These figures and construction details are manufacturer-published specifications; no independent timing or shock test is established here. The steel model’s official product page also gives the case, strap and water-resistance details.
Steel and rose gold compared
The two documented versions share the GCA8000 automatic micro-rotor calibre, 50-hour reserve and 10 ATM / 100-metre water-resistance rating. Their principal differences are material, price and the details surrounding the dial.
| Detail | Stainless steel | Rose gold |
|---|---|---|
| Reference | GC8.0-SQ-A-00 | GC8.0-RG-06 |
| Case | Medical-grade 316L stainless steel | 18K Rose Gold 4N |
| Displayed price | $59,500 before sales tax, on the official product page accessed in 2026 | $87,000 before sales tax, on the official product page accessed in 2026 |
| Strap | Black HNBR vulcanized rubber | Stoned-grey rubber |
| Hands | Central hours and minutes; further hand-colour details not stated on the cited steel product page | Larger squared gold-coloured hands with white Super-LumiNova |
| Movement, reserve and water resistance | GCA8000 automatic micro-rotor; 50 hours; 10 ATM / 100 metres | GCA8000 automatic micro-rotor; 50 hours; 10 ATM / 100 metres |
The official product pages displayed those prices when accessed in 2026; prices may change. The rose-gold model was announced on 11 September 2023. Its product page and announcement identify its case, strap and hand treatment. The choice between versions therefore turns on the preferred case and strap finish, as well as the price difference, rather than a different published movement or water-resistance rating.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Strap, water resistance and what the specifications establish
The steel version comes on a black HNBR vulcanized-rubber strap decorated with Clous de Paris on one side and the brand’s logo tapisserie on the reverse; Gerald Charles lists sizes S, M and L. The rose-gold version is paired with a stoned-grey rubber strap. The cited pages do not establish that either strap is separately available as a replacement or that generic alternatives are compatible.
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A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11Gerald Charles rates both versions at 10 ATM / 100 metres. That is the brand’s stated water-resistance specification, not an independent test or a personalized swimming recommendation. The available product information does not provide independent findings on wrist comfort, weight distribution, legibility in changing light, crown feel, daily accuracy or durability; those are questions that require direct wearing or testing rather than inference from the listed specifications.
Price and reference to check
For the steel watch, identify reference GC8.0-SQ-A-00; the official product page lists it at $59,500 before sales tax. The rose-gold 18K 4N model is reference GC8.0-RG-06 and is listed at $87,000 before sales tax. The displayed amounts are those on Gerald Charles’ product pages accessed in 2026, so confirm current pricing and availability with the brand or an authorized retailer before purchase.
Quick Recap
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.
