Glashütte Original · SeaQ

Strap for SeaQ Date Stainless Steel / Blue / Rubber - Folding

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter40 mm
Reference1-39-11-09-61-33
FamilySeaQ
MovementGlashütte Original caliber 39-11 hours, minutes, seconds | date
Year2024
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

Straps for the SeaQ 1-39-11-09-61-33

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The SeaQ 1-39-11-09-61-33, seen from the bench

The Glashütte Original SeaQ Date Stainless Steel model features a 39.50 mm stainless steel case with 300 m water resistance and a 20 mm lug width. It houses the calibre 39-11 movement with date function and decorated components following Glashütte manufacturing standards. The sapphire crystal with anti-reflective treatment ensures legibility in demanding light conditions, while the 904L steel case offers superior corrosion resistance for versatile use.

Frequently asked questions

What is the lug width of the Glashütte Original SeaQ 1-39-11-09-61-33?

The lug width of the SeaQ reference 1-39-11-09-61-33 is 20 mm. This dimension is measured between the two metal pins (spring bars) of the lugs that insert into the case lugs. A compatible strap must have exactly this width to fit correctly to the case without wobbling or forcing.

Which type of strap is most suitable for the SeaQ 1-39-11-09-61-33?

The SeaQ accommodates various materials depending on intended use. An alligator strap with vegetable tanning offers understated elegance and natural patina development over time. For sports contexts, a high-density NATO provides robustness and versatility. A calf leather strap represents an ideal aesthetic compromise for daily wear. In frequent aquatic environments, vulcanised rubber is the most practical solution for durability and comfort.

How do you change the strap on a Glashütte Original SeaQ?

Strap replacement requires a spring bar tool. Position the thin end of the tool under one lug pin, apply gentle pressure to disengage the pin from the lug slot, and repeat for the opposite side. Once the pins are removed, slide off the old strap and insert the new one, ensuring the pins lock correctly into their housings. This operation is ideally performed on a soft surface to prevent damage to the case.

Can I use an aftermarket compatible strap on a Glashütte Original SeaQ?

Absolutely. An artisan-crafted strap of equivalent construction quality does not compromise the watch's integrity. The essential requirement is that the lug width is precisely 20 mm and that the strap terminals are shaped to fit the case lugs without excessive thickness. A bespoke strap represents an opportunity to personalise the SeaQ according to your usage context whilst maintaining elevated construction standards.

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

A leather strap of elevated construction quality (alligator or calf with vegetable or mineral tanning) withstands 4-6 years of daily wear, with variability depending on climate, skin moisture and frequency of sun exposure. Natural rubber gradually hardens over time but maintains functionality. High-density NATO textiles resist wear for over 8 years if protected from excessive mechanical abrasion. An artisan strap can be serviced through re-stitching and component replacement (buckle, keeper) rather than complete substitution, significantly extending its operational lifespan.

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