Unimatic · Modello Uno

Strap for Modello Uno GMT Revolution - The Rake Arctic Fox

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter42 mm
ReferenceU1S-GMT-RR
FamilyModello Uno
MovementETA caliber 2893-2 hours, minutes, seconds, Additional 24 hours Hand (adjustable) | date
Year2022
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Modello Uno U1S-GMT-RR

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Modello Uno U1S-GMT-RR, seen from the bench

The Unimatic Modello Uno U1S-GMT-RR features the automatic ETA 2893-2 caliber with a GMT function via an adjustable 24-hour hand and date indication. The movement offers hours, minutes, seconds, and a fourth hand for the second time zone. The watch has 22mm lugs for the strap.

Frequently asked questions

What is the lug width of the Unimatic Modello Uno U1S-GMT-RR?

The lug width of the Modello Uno U1S-GMT-RR is 22mm. This measurement represents the distance between the anchor pins in the suspension lug. All straps must be compatible with this specific dimension to ensure stable and secure attachment to the case.

What is the best strap for the Unimatic Modello Uno U1S-GMT-RR?

The choice depends on usage and aesthetic preferences. For a refined, formal look, we recommend vegetable-tanned alligator in brown or cognac tones. For an instrumental and tactical aesthetic, a ballistic fabric NATO in grey or navy amplifies the tool-watch vocation. FKM rubber is ideal for water activities or humid environments. Vegetable-tanned calf leather develops a natural patina that evolves over time.

How do I change the strap on the Modello Uno U1S-GMT-RR?

Remove the previous strap using a spring bar tool: insert the small blade into the lateral spaces of the suspension lug to release the elastic pins. Once the pins are free, extract the worn strap. Insert the new strap by passing the elastic pins through the lateral openings until they click into place. Verify that the strap is fully inserted and does not rotate on the case.

Can I use aftermarket straps compatible with the Modello Uno U1S-GMT-RR?

Absolutely yes. Any strap with a 22mm lug width is compatible with the Modello Uno U1S-GMT-RR. Milanostraps offers artisanal straps in leather, alligator, calf, NATO, and rubber, all crafted for this measurement. Always verify the width is correct before purchase to avoid attachment issues.

How long does a leather strap last on the Modello Uno U1S-GMT-RR?

Durability depends on usage intensity, climatic conditions, and material. A vegetable-tanned calf strap lasts on average 3-5 years with daily use, developing a fascinating patina over time. Alligator, being more durable, reaches 5-7 years. Exposure to humidity, sweat, and UV rays accelerates ageing. Periodic maintenance (cleaning and, if necessary, conditioning) extends strap longevity.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only