Glashütte Original · Senator

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

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
Reference1-89-02-01-05-01
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 1-89-02-01-05-01

Selected for the 21 mm lug width · workshop selection

All 21 mm straps →

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

The Senator World Time features the Glashütte Original calibre 89-02 with world time functions, large date, day and power reserve indicator. The 21mm lug case integrates an adjustable 24-hour hand with day/night indication. The automatic movement offers small seconds and a second hour hand for the reference time zone.

Frequently asked questions

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

The lug width is 21mm, measured from the inner edge of one lug to the other. This dimension is critical to ensure correct aesthetic and functional pairing: an undersized strap causes undesired movement, whilst an oversized strap alters the case proportions.

Which strap is recommended for the Senator 44 in red gold?

Alligator in tobacco or cognac tones represents the most appropriate choice from both aesthetic and constructive perspectives. Alternatively, vegetable-tanned calf leather in dark brown offers natural patina and elegant ageing over time. Avoid straps in saturated colours or patterns, which compete visually with the gold case.

How do I change the strap on my Glashütte Original Senator 1-89-02-01-05-01?

Position the watch on a soft support with the lugs in horizontal position. Use a spring bar tool (available from specialised retailers) to gently compress the internal spring of the spring bar. Completely remove the spring bar from the lug, proceeding with care to avoid scratching the gold case. Insert the new strap by aligning the lug to the spring bar hole, compress slightly and allow the spring to settle for stable positioning.

Is an aftermarket strap compatible with the 21mm lug width of the Senator 44?

Yes, any strap manufactured for a 21mm lug width is compatible. However, we recommend selecting straps in quality materials (alligator, calf, shell cordovan) and with construction finishes analogous to those of the watch to maintain aesthetic and constructive coherence.

What is the average lifespan of a natural leather strap for this watch?

A high-quality leather strap, subject to regular use and proper maintenance (gentle cleaning, drying, protection from extreme humidity), maintains structural integrity for 3-5 years. Aesthetic wear (patina, micro-marks) begins after 6-12 months, an element that positively characterises natural leather and indicates ageing consonant with the material.

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