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The Nivada Grenchen Antarctic GMT is a 36 mm remake of the brand’s first GMT watch, pairing the original’s compact, retro look with a more practical movement. Its central 24-hour hand can now be set independently; on the vintage AR-1146, that hand moved in sync with the 12-hour hand. The new watch is an office- or caller-style GMT, not a flyer GMT with an independently adjustable local-hour hand.
A compact remake with a more usable GMT hand
Nivada Grenchen identifies the Antarctic GMT as its first GMT watch and dates its introduction to the early 1970s. Monochrome Watches, in its 29 October 2024 first look, describes the vintage example behind the remake as likely from the late 1960s or early 1970s, reference 87013. That dating is an informed description of the example, not an independently established archival date.
The remake keeps the 36 mm diameter, acrylic crystal and vintage-inspired red-and-black GMT hand, but replaces the original-era AR-1146 with an automatic Soprod C125. The meaningful functional change is the GMT hand’s independent adjustment. The watch’s bidirectional 24-hour bezel adds another time-zone indication.
How the original and remake differ
| Feature | Vintage Antarctic GMT | Modern Antarctic GMT |
|---|---|---|
| Movement and GMT adjustment | AR-1146; the 24-hour hand moved in sync with the 12-hour hand and could not be independently adjusted, according to Nivada Grenchen’s history and Monochrome’s report. | Automatic Soprod C125; the central GMT hand is independently adjustable, according to Nivada Grenchen’s specifications. |
| Case and water resistance | Monochrome describes an EPSA compressor case rated to 200 m, with twin crowns. | Conventional two-part case with screw-in caseback and 5 ATM/50 m rating, per Monochrome. It retains compressor-like visual cues but is not a modern EPSA compressor case. |
| Diameter and thickness | Not stated in the cited source pages. | 36 mm diameter and 11.1 mm thick, per Nivada Grenchen. |
| Crystal | Not stated in the cited source pages. | Acrylic; Monochrome describes it as domed Plexiglass. |
| Bezel and crowns | Twin crowns: one operated the 24-hour bezel and the other set the watch, according to Monochrome. | Bidirectional 24-hour bezel; the cited modern specifications do not establish an equivalent twin-crown operating arrangement. |
Monochrome explains that the original EPSA case used water pressure to press the case against its gasket. That historical construction should not be attributed to the remake: its similar appearance does not make it a functional compressor case.
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GMT hand behavior: office/caller, not flyer
In Monochrome’s terminology, the modern Antarctic GMT is an office/caller-style GMT. Its independent central 24-hour hand can be adjusted separately to follow another time zone while the regular hour hand continues to indicate local time. The vintage watch lacked that independence: its 24-hour hand tracked the 12-hour hand in sync.
This is not the arrangement usually meant by a flyer GMT, where the local 12-hour hand can be adjusted independently, typically in one-hour jumps. The Antarctic’s independent adjustment applies to the GMT hand instead. Its bezel supplies an additional 24-hour reference, so the display can be used to track another time zone without changing the watch’s local-hour hand.
Rank #2
- GMT - With its sophisticated tonal GMT index and prominent red triangle GMT hand, this watch can be set to track a second time zone.
- Stainless Steel - The durable stainless-steel case and bracelet are resistant to corrosion, rust, and daily wear and tear.
- Date Window - Easily track the date in a dedicated window beside 3 o'clock.
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Antarctic GMT specifications
- Case diameter: 36 mm.
- Thickness: 11.1 mm.
- Case material: 316L stainless steel.
- Crystal: Acrylic.
- Movement: Automatic Soprod C125 with independently adjustable central GMT hand.
- Power reserve: 42 hours.
- Functions: Hours, minutes, seconds, date and GMT.
- Bezel: Bidirectional 24-hour bezel, according to the official black-product specifications.
- Water resistance: 5 ATM/50 m.
- Strap size: 20 × 16 mm, as listed by Nivada Grenchen.
- Caseback: Closed caseback engraved with a penguin, per the official black-product page.
- Movement details: 25 jewels and 28,800 vibrations per hour, per the official black-product page.
The published case-length figures do not agree: Nivada Grenchen’s general product-page text gives 42 mm, the black specifications page gives 40 mm, and Monochrome reports about 41 mm. Check the exact variant’s current listing rather than relying on a single figure.
Black and tropical dial options
At launch, Monochrome described the black-dial watch as part of the permanent collection and the tropical brown-dial version as a 99-piece limited edition. Those are launch-era descriptions from 2024, not confirmation of what is available now. Nivada Grenchen lists strap options including leather, rubber racing straps and a beads-of-rice bracelet; configurations can vary, so verify the live listing for the chosen dial.
Rank #3
- 39mm stainless steel case
- 8 inch black strap
- Black dial
- Mineral Glass lens
- Water resistant up to 50 meters
Price and availability
Monochrome reported launch prices of EUR 1,500, CHF 1,400 and USD 1,600, with orders opening on 14 November 2024. Nivada Grenchen’s current Antarctic GMT page lists a starting price of $1,600. Regional pricing, stock and the availability of the 99-piece tropical edition may change; check the manufacturer’s live listing for the current configuration and price.
Quick Recap
Best Value
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Rank #4
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- Stainless steel: The watch with a diameter of 41 mm is matched with a stainless steel case. The case is matte brushed and the bevel is polished to create a calm and low-key feeling. The winding crown is designed with a non-slip texture for easier operation. The solid stainless steel straps on both sides are connected with rivet heads, presenting a unique stepped structure. Comfortable to wear.
- Water Resistance: Waterproof up to 200M, this watch is designed to withstand the challenges of the sea as well as everyday life, giving you accurate and reliable timekeeping against sweat, splashes or swimming and so on, but avoid wearing it in hot water or in a sauna. (Note: when entering water, tighten the crown upwards).
- BUY WITH CONFIDENCE: If you have problems with your watch, please feel free to contact us. We will provide you with a satisfactory solution, in addition to including a 1-year warranty on quality issues and a 30-day no-excuses refund service.
Sources
- Nivada Grenchen: Antarctic GMT collection and official model information
- Nivada Grenchen: Antarctic GMT Black product specifications
- Monochrome Watches: Antarctic GMT first look, 29 October 2024
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.




