Glashütte Original · SeaQ

Strap for SeaQ Date Stainless Steel / Blue / Synthetic - Pin

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
Reference1-39-11-09-61-08
FamilySeaQ
MovementGlashütte Original caliber 39-11 Hours, Minutes, Seconds | Date
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 1-39-11-09-61-08

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The SeaQ 1-39-11-09-61-08, seen from the bench

The Glashütte Original SeaQ 1-39-11-09-61-08 is a stainless steel diving watch with a 39.50 mm case and 300-meter water resistance. It features the Glashütte Original 39-11 automatic caliber (28,800 vph, 4 Hz) and a sapphire crystal with unidirectional ceramic bezel. The 20 mm lug width accommodates compatible straps and maintains balanced proportions between case and strap.

Frequently asked questions

What is the lug width of the Glashütte Original SeaQ 1-39-11-09-61-08?

The Glashütte Original SeaQ 1-39-11-09-61-08 features a lug width (ansa) of 20 mm. This measurement is crucial for aftermarket strap compatibility. To verify, use a digital calliper to measure the distance between the strap-pin supports at the base of the case: the measurement should be exactly 20 mm.

Which strap is most suitable for the Glashütte Original SeaQ 1-39-11-09-61-08?

Selection depends on intended use and aesthetic preference. For formal elegance, alligator leather in black, cognac, or deep blue enhances Saxon design philosophy. For daily versatility, vegetable-tanned calf leather with brushed finish provides character and visible ageing. For intensive water sports, vulcanised rubber (FKM) ensures reliable grip even when wet. A cordura NATO offers practical robustness.

How do I change the strap on the Glashütte Original SeaQ 1-39-11-09-61-08?

The SeaQ uses standard spring-bar attachment. Obtain a spring-bar removal tool (available from watchmakers and specialist retailers). Locate the small opening hole at the base of the lug, position the tool inside, apply gentle upward pressure until the spring bar releases. Remove the old strap. Align the new strap with the upper lug, reinsert the spring bar, verify secure locking. Repeat for the lower lug.

Is the Glashütte Original SeaQ 1-39-11-09-61-08 compatible with quality aftermarket straps?

Absolutely. The standard 20 mm lug width allows installation of any artisanal strap manufactured to this specification. Casati Milano offers bespoke straps in alligator, calf, shell cordovan, NATO, and vulcanised rubber, all fitted with compatible spring bars and precision stitching.

How long does a leather strap last on the Glashütte Original SeaQ 1-39-11-09-61-08?

A quality artisanal leather strap (alligator, vegetable-tanned calf) typically lasts 3-5 years of daily wear, with variables depending on sun exposure, humidity, and frequency of use. Leather gradually thins and stitching may loosen. Vulcanised rubber lasts longer (5-8 years) but lacks aesthetic character. Regular maintenance with natural balms extends the lifespan of any 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