The Holthinrichs x The Horology Club Signature Ornament “Concrete Jungle” is a design-led watch collaboration built around a Luminova-infused concrete dial and two Grade 5 titanium case designs. The LAB (reference THC05T) uses a 3D-printed case with skeleton lugs; the Ornament (THC06H) has a CNC-machined case with a more finely finished mix of surfaces. Both share the announced 38.5 mm diameter, 9.85 mm thickness and 46 mm lug-to-lug measurement.
What is the Holthinrichs Concrete Jungle?
Holthinrichs and Hong Kong-based The Horology Club announced the Signature Ornament “Concrete Jungle” on 18 December 2024 as their first collaboration. It brings together Holthinrichs’ “Horlogerie Brut” approach and The Horology Club’s collector-focused design language. The club says Hong Kong’s dense urban landscape inspired the name and concept.
The dial is the defining feature: concrete, rather than natural stone, is infused with Luminova and set on a metal base. The result is an unusual material-led take on the stone-dial watch, paired with a contemporary Grade 5 titanium case. The official announcement identifies a modified Sellita SW-300 caliber in both versions. The Horology Club’s announcement is the primary source for the collaboration’s design, references and specifications.
LAB and Ornament: what differs?
The two versions share the dial concept, stated dimensions and Grade 5 titanium construction, but their cases are made differently and create distinct looks. Here are the announced distinctions alongside the launch-era price reporting.
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| Feature | LAB — THC05T | Ornament — THC06H |
|---|---|---|
| Case material | Grade 5 titanium | Grade 5 titanium |
| Case construction | 3D-printed, with skeleton lugs | CNC-machined, with polished, brushed and grained surfaces |
| Additional case details | Skeleton lugs | Grained bezel and titanium dial ring |
| Release format | 50 pieces, according to The Horology Club’s December 2024 announcement | Time-limited release; Time+Tide reported a two-week order period in December 2024 |
| Reported launch price | €5,600 before taxes, per Time+Tide’s December 2024 launch coverage | €3,850 before taxes, per Time+Tide’s December 2024 launch coverage |
The official announcement lists the same core dimensions for the two versions: 38.5 mm in diameter, 9.85 mm thick and 46 mm lug to lug. It describes the caliber as a modified Sellita SW-300, without giving further movement specifications in the announcement.
What did launch coverage report?
Time+Tide’s December 2024 coverage additionally reported sapphire crystals on the front and rear, an approximately 50-hour power reserve, and an extra Delugs rubber sailcloth strap supplied with the LAB. These are launch-era details attributed to that publication, not evidence of current stock or a current offer. The official announcement had estimated delivery in April 2025; that was a historical estimate, not a present delivery date.
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Price and availability now
The reported prices of €3,850 for the Ornament and €5,600 for the LAB were launch prices before taxes, not current quotes. The Horology Club catalog has shown the watch with a starting listing price of HK$33,000 and a sold-out status, but that catalog snapshot does not confirm live availability or a current sale price. Check directly with the retailer or maker for any current stock, pricing and delivery information. The catalog can be viewed at The Horology Club’s Independent Watchmakers collection; its THC Creations collection is another catalog page, not confirmation that this model is available.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Which version makes more sense?
The choice is principally about case execution and the original release format, rather than a documented difference in the dial or dimensions. The LAB’s 3D-printed construction and open lugs make its industrial character more explicit, while the Ornament’s machined case and varied surface finishing emphasize case detailing. No independent comparison establishes differences in comfort, durability, accuracy or lume performance, so those should not be inferred from the designs alone.
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