Glashütte Original · SeaQ

Strap for SeaQ Date Stainless Steel / Diamond / Blue / Synthetic - 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
Reference1-39-11-09-62-34
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 1-39-11-09-62-34

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The SeaQ 1-39-11-09-62-34, seen from the bench

The SeaQ features the Glashütte Original automatic calibre 39-11 with hour, minute, second and date indications. The model uses 20mm lugs for the strap. The reference 1-39-11-09-62-34 identifies this version in the German brand's dive watch collection.

Frequently asked questions

What is the exact lug width of the Glashütte Original SeaQ 1-39-11-09-62-34?

The lug width of the SeaQ 1-39-11-09-62-34 is 20mm. To verify compatibility, measure the internal space between the spring bars: it must be precisely 20mm. It is essential to confirm this measurement before ordering a strap, as an incorrect lug width will result in incompatibility and potential damage to the case.

What is the best strap for the Glashütte Original SeaQ?

The choice depends on intended use. For daily elegance, we recommend alligator with fine grain (cognac or black) or vegetable-tanned calf leather: both develop a natural patina over time, enhancing the Saxonian minimalist aesthetic. For versatility, cotton-nylon NATO offers quick changes without tools. For marine use, FKM rubber ensures waterproofing and durability in humid environments.

How do I change the strap on the SeaQ 1-39-11-09-62-34?

Use a spring bar tool to remove the elastic lugs. Position the tool in the small lateral hole of the lug and apply gentle pressure to release it from the housing. Once the lug is removed, the strap detaches. To install the new strap, align the eyelets with the lug ends (20mm) and reinsert the lugs until they click securely into place. Verify that the strap is centred before wearing the watch.

What aftermarket straps are compatible with the Glashütte Original SeaQ?

Any strap with a 20mm lug width is compatible with the SeaQ 1-39-11-09-62-34, regardless of strap brand. We recommend choosing materials of quality equivalent to the case (full-grain leather, FKM rubber, natural fabrics) to maintain aesthetic coherence and durability over time. Leather straps with rubber backing absorb impacts and reduce noise.

How long does a natural leather strap last on a Glashütte Original SeaQ?

A high-quality artisanal strap in alligator or vegetable-tanned calf leather typically lasts 3–5 years of daily wear, provided regular maintenance (periodic cleaning with a soft damp cloth, protection from excessive moisture). Initial wear manifests as loss of rigidity at the buckle eyelet; this is natural and does not compromise functionality. The patina that develops increases aesthetic value. An FKM rubber strap maintains elastic properties for 7–10 years before requiring replacement.

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