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 width19 mm
Case diameter35 mm
ReferenceRU6910101B1X1 (aka: RU6910)
FamilyPolerouter
MovementUniversal Geneve caliber 1-69 Hours, Minutes, Seconds
CaseRed Gold

Spring bar

Swiss Standard universal spring bars

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

Straps for the Polerouter RU6910101B1X1 (aka: RU6910)

Selected for the 19 mm lug width · workshop selection

All 19 mm straps →

The Polerouter RU6910101B1X1 (aka: RU6910), seen from the bench

The Universal Genève Polerouter features the caliber 1-69 with hour, minute and second indications. The model utilizes 19mm lugs and reference RU6910101B1X1. The movement offers essential hourly functions in a classic three-hand configuration.

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