Glashütte Original · Senator

Strap for Senator Cosmopolite Red Gold / Silver / Alligator / Folding

Takes 21 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width21 mm
Case diameter44 mm
Reference1-89-02-01-05-61
FamilySenator
MovementGlashütte Original caliber 89-02 Hours, Minutes, Small Seconds, World Time, Day / Night Indication, Additional 12 Hour Hand (adjustable) | Big Date, Day | Power Reserve Indicator
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 Senator 1-89-02-01-05-61

Selected for the 21 mm lug width · workshop selection

All 21 mm straps →

The Senator 1-89-02-01-05-61, seen from the bench

The Glashütte Original Senator 1-89-02-01-05-61 in red gold represents the manufacturing rigor of the Saxon manufacture with a construction philosophy visible in every detail. The 44mm case houses the caliber 89-02 chronometer-certified movement with 28,800 oscillations per hour, featuring a world time complication with day/night indicator and adjustable 12-hour hand. The 18-carat red gold alloy offers a warm tone with enhanced resistance to wear. A 21mm lug width accommodates straps of considerable substance while maintaining the geometric proportions the Senator deliberately pursues.

Frequently asked questions

What is the lug width of the Glashütte Original Senator 1-89-02-01-05-61?

The Glashütte Original Senator 1-89-02-01-05-61 features a 21mm lug width. This dimension is specifically calibrated to suit the proportions of the 44mm case, ensuring optimal aesthetic balance. Verify by measuring the internal space between the two lugs at the base: it must correspond precisely to 21mm.

Which strap material is most suitable for the Glashütte Original Senator 1-89-02-01-05-61?

For the Senator in red gold, we recommend alligator leather using vegetable tanning (chocolate brown, cognac, or black) for maximum material consonance with the case. Shell cordovan is a durable alternative (8–12 years) with naturally developing glossy patina. For intensive daily wear, vulcanised FKM rubber ensures waterproofing and wear resistance. Technical NATO is a contemporary, less formal option.

How do I change the strap on a Glashütte Original Senator?

Position yourself with the spring bar tool perpendicular to the lug. Locate the access hole on the internal side, insert the tool, and push laterally to compress the internal spring. The lug will slide out easily once the spring is depressed. When reinserting the strap, ensure that the passanterie and spring anchorage are properly aligned. Test with gentle movements: the strap must not oscillate on the lugs.

Can I fit an aftermarket quality strap on the Senator 1-89-02-01-05-61?

Yes, high-quality aftermarket artisanal straps are entirely compatible. Verify that the lug width is exactly 21mm, that thickness does not exceed 6–7mm (to avoid obstruction of the lug wall), and that any passanterie slides smoothly on the lugs without resistance. Straps constructed with vegetable-tanned leather, alligator, or cordovan will ensure aesthetic coherence with the red gold.

What is the lifespan of a leather strap on the Glashütte Original Senator?

A quality artisanal alligator or calf leather strap typically lasts 5–8 years with regular wear, depending on frequency of use and ambient humidity. Shell cordovan reaches 8–12 years thanks to its exceptional material density. Regular maintenance (gentle cleaning and application of natural balm every six months) significantly extends longevity. FKM rubber straps generally last 5–7 years before showing reduced flexibility.

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