The TRIWA Humanium 39 Automatic is a real watch, identified in a February 2020 launch announcement as the HU39-SLATE AUTOMATIC. The announcement specifies a Miyota automatic movement and up to 48 hours of running time, but does not name the caliber. TRIWA’s currently surfaced HU39D Slate page is for a different, quartz watch, so its specifications should not be applied to the automatic.
What the TRIWA Humanium 39 Automatic is
The Japanese launch announcement dated 6 February 2020 names the slate-gray model “HU39-SLATE AUTOMATIC.” It identifies the watch as part of TRIWA’s Humanium collection and describes its movement as automatic. The announcement does not provide a precise caliber or a full technical specification.
Movement and running time
The documented movement claim is Miyota automatic, with a maximum running time of 48 hours, according to the 2020 launch announcement. Because no caliber is named, the source does not establish which specific Miyota movement is inside the watch.
What is not established for the automatic
The available sources do not establish the automatic model’s case dimensions, water resistance, crystal, strap width, current availability, or price. Those details should not be inferred from a similarly named quartz listing.
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Humanium: the material and the collaboration’s stated purpose
TRIWA says its Humanium partnership launched in 2018. The collaboration page describes weapons from conflict-affected regions being melted and repurposed into watches; it says a portion of proceeds from each watch sold was donated to IM Sweden’s Development Partner to support victims of armed violence and communities affected by conflict. This is TRIWA’s description of the partnership and its proceeds, not an independently verified account of the material supply chain or donation totals. TRIWA’s collaboration page
The 2020 launch announcement describes Humanium as metal made by recovering illegal firearms, melting them, and removing impurities. That is the announcement’s explanation; it does not provide a detailed materials specification or independent verification of the process. Read the launch announcement
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TRIWA’s collaboration page reports that the Humanium Metal initiative facilitated the destruction of over 12,000 firearms. The page does not specify when that cumulative figure was measured, so it should not be read as a dated or current total. TRIWA’s collaboration page
Automatic variants: Slate and Gold
| Model | Finish and edition | Case-back detail | Movement information |
|---|---|---|---|
| HU39-SLATE AUTOMATIC | Slate gray; named in the 6 February 2020 launch announcement | Not stated in the launch announcement | Miyota automatic; up to 48 hours’ running time; caliber not stated. Source |
| HUMANIUM 39 AUTOMATIC GOLD | Gold variant described as limited in a 21 February 2020 distributor announcement | Transparent case back, according to the announcement | Not stated in the announcement. Source |
These are separate automatic variants. The Gold announcement’s transparent case-back description does not establish the Slate model’s case-back construction, and the sources do not provide a full like-for-like specification comparison.
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- Measuare: Band length: 18.5cm/7.39inch, dial diameter: 41mm/1.6inch, dial thickness: 15mm/0.6inch.
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Don’t confuse the automatic with the HU39D Slate
TRIWA’s surfaced HU39D Slate product page describes a quartz watch, not the automatic model discussed above. It lists a 39 mm case, Miyota GL10 quartz movement, 5 ATM water resistance, mineral glass, and a 20 mm strap width. Those specifications belong to the HU39D listing and cannot be safely transferred to the HU39-SLATE AUTOMATIC. TRIWA HU39D Slate page
The product page also uses the tagline “It’s Time for Peace.” That is TRIWA’s brand tagline, not a quotation attributed to a named person. The page’s existence confirms the quartz listing, but does not establish that the automatic remains in production or is currently available.
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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.




