Technical Archive

Glashütte Original
Senator 1-58-04-04-05-01— lug 21mm

Glashütte Original Senator 1-58-04-04-05-01: 21mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Senator Chronometer Regulator Red Gold / Silver / Alligator / Pin

Artisanal Note

"This model requires a precise 21mm lug width to preserve the original sartorial balance."

Technical Specifications

Glashütte Original 1-58-04-04-05-01
Lug Width
21 mm

The essential strap measurement.

Browse 21mm straps →
Reference

1-58-04-04-05-01

Movement

Glashütte Original caliber 58-04 Hours, Minutes, Small Seconds | Big Date | Power Reserve Indicator

The Heritage

The Glashütte Original Senator 1-58-04-04-05-01 is a 42mm red gold case watch from the prestigious German Senator family, representing over 175 years of watchmaking tradition from Glashütte. It features the automatic caliber 58-04 with 167 components, offering hours, minutes, small seconds, date window, and 72-hour power reserve with ±3 seconds daily tolerance. The lug width is 21mm.

FAQ

What is the exact lug width of the Glashütte Original Senator 1-58-04-04-05-01?

The lug width of the Senator 1-58-04-04-05-01 is 21mm. This dimension is measured as the internal distance between the two lugs in 18k red gold that connect the case to the strap. To verify this measurement, use a digital calliper and measure between the two internal holes of the lug. This specification is derived from the 42mm case proportions and ensures compatibility with any 21mm strap available on the market.

What is the ideal strap for the Senator 1-58-04-04-05-01 in red gold?

For the red gold Senator, we recommend genuine alligator leather in cognac brown tone, which creates natural chromatic consonance with the warm hue of red gold. Shell cordovan in burgundy offers an alternative luxury choice with progressive patina development. For daily versatility, superior calf leather with vegetable tanning guarantees characteristic patina over time. Your climate choice matters: in humid or very hot environments, consider FKM rubber for superior dimensional stability.

How do I change the strap on my Glashütte Original Senator 1-58-04-04-05-01?

Changing the strap on the Senator requires a professional and delicate lug removal procedure. Use a strap removal tool with PTFE-coated tips to avoid damaging the red gold lugs. Position the watch on a leather pad, gently push from one lug to extract it completely, then repeat on the opposite side. Ensure the new strap has correct dimensions (21mm lug width). If you lack experience, consult a certified watchmaker or contact Casati Milano's bespoke service for professional craftsmanship.

Can I use an aftermarket compatible strap on my Senator 1-58-04-04-05-01?

Yes, any 21mm strap is compatible with the Senator 1-58-04-04-05-01. Artisanal Milan-made straps offer construction quality equivalent to original factory straps, with the advantage of selecting premium materials (alligator, cordovan, vegetable-tanned calf) and customising colour. Verify that the new strap's lugs have adequate thickness for the red gold spring bar carrier, and that the buckle is proportioned to the case dimensions.

How long does a leather strap last on a Glashütte Original Senator?

Durability depends on material type and usage frequency. A quality alligator strap with vegetable tanning lasts 5-8 years in daily use, developing increasingly characteristic patina. Shell cordovan resists 6-10 years due to superior material density. Vegetable-tanned calf, with regular maintenance (biannual application of specialist balm), reaches 4-6 years. All these timeframes extend significantly if you rotate multiple straps. FKM rubber maintains functionality for 3-4 years before elasticity diminishes, regardless of frequent use.