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

The lug width of the Glashütte Original SeaQ reference 1-39-11-09-81-34 is 20 mm. This measurement is calculated by measuring the distance between the upper and lower lugs of the stainless steel case measuring 39.50 mm. The lugs feature a dovetail profile that ensures solid strap attachment without axial play.

The choice depends on intended use. For formal and business contexts, we recommend an alligator or shell cordovan strap with vegetable tanning in cognac or black tones. For diving or marine use, an FKM rubber strap is the only rational choice for salt-water resistance. A high-density nylon NATO or vegetable-tanned calf represents the ideal compromise for aesthetic and functional versatility.

The SeaQ uses a standard dovetail spring bar attachment system. To change the strap, you'll need a dedicated spring bar tool and a stable work surface. Insert the tool into the gap between the lug and case, applying gentle leverage to compress the internal spring, then slide the lug out of its housing. Repeat on the opposite side. Reverse the process for installing the new strap. We recommend entrusting this operation to a qualified professional to avoid case damage.

Yes, the SeaQ with its 20 mm lug width is compatible with any quality aftermarket strap constructed to this width specification. At milanostraps.it you'll find a curated selection of 20 mm straps in alligator, calf, NATO and rubber, all crafted with artisanal attention and suited to the SeaQ's sophisticated aesthetic. Our straps maintain construction standards consistent with case quality.

A leather strap's lifespan depends on tanning method and usage patterns. An alligator or shell cordovan strap with vegetable tanning, subjected to regular wear, maintains structural integrity for 3-4 years. High-density calf typically lasts 2-3 years. These timescales reduce significantly if the strap is frequently exposed to water, moisture or intense UV radiation. Patina development is natural and desirable; premature leather degradation indicates environmental stress. Regular maintenance—cleaning, drying, conditioning with specific products—significantly extends strap longevity.