Universal Geneve · Polerouter
Strap for Polerouter SAS Tribute Red Gold / Black
Takes 19 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the Polerouter RU6910101B1X1 (aka: RU6910)
Selected for the 19 mm lug width · workshop selection
Brown Saffiano Leather Strap€90
Apple Watch Saffiano Leather Strap Blue€105
Cognac Mohawk Leather Strap€95
Hammered Calfskin Watch Strap Green with Ecru Stitching€98
Saffiano Taupe Strap€90
The Polerouter RU6910101B1X1 (aka: RU6910), seen from the bench
Frequently asked questions
What is the lug width of the Universal Genève Polerouter RU6910101B1X1?
The lug width of the Universal Genève Polerouter RU6910101B1X1 is 19 mm. This measurement refers to the internal distance between the two lugs of the case where the strap attaches. To verify, use a digital calliper or flexible measuring tape, measuring precisely between the attachment pins. Any strap with a 19 mm lug width will be compatible with this model.
What strap is best suited for the Universal Genève Polerouter RU6910101B1X1?
For the RU6910101B1X1 in red gold, we recommend an alligator strap with vegetable tanning: the natural scale texture dialogues elegantly with the warm tone of the metal, whilst vegetable-tanned leather develops a noble patina over time. A quality alternative is Hermès calf in brown or black. For a sportier, historically accurate aesthetic, a military NATO or FKM vulcanised rubber strap reflects the original civil aviation context.
How do I change the strap on my Polerouter RU6910101B1X1?
The procedure is straightforward: locate the attachment pins at the case lugs (one on each side). Using a spring bar tool, apply gentle pressure towards the case centre to release the tension of the pin's internal spring, then extract the old strap. Insert the new strap by aligning the holes with the pins, then release the spring. Ensure the pins are fully seated in the case lugs.
Can I use an aftermarket strap on a vintage watch like my Polerouter?
Yes, provided the strap has a compatible 19 mm lug width. A quality aftermarket strap (bespoke, premium leather or technical rubber) is not only compatible but often improves the appearance and comfort of the original watch. It is essential to choose straps that respect historical proportions: for a 35 mm watch, avoid excessive widths that would unbalance the overall aesthetic.
How long does a leather strap last on a watch like the Polerouter?
Durability depends on leather quality and intensity of wear. An alligator strap with vegetable tanning, worn moderately (3–4 days weekly), can last 5–7 years before showing significant wear. Calf leather of comparable quality has similar longevity. Factors such as sweat exposure, weather and sunlight accelerate ageing. Periodic maintenance (gentle cleaning, conditioning with specific oils) significantly extends strap life.
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.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only
