Strap for SeaQ Date Stainless Steel / Blue / Rubber / Pin

The Glashütte Original SeaQ model 1-39-11-10-90-06 features a lug width of precisely 20 mm, measured from the centre of one lug pin to the other. This dimension is specific to the 39.50 mm case configuration and ensures compatibility with straps manufactured to the 20 mm standard. Milano Straps maintains a dedicated inventory for this measurement.

For the bi-colour SeaQ (yellow gold + stainless steel), we recommend vegetable-tanned alligator in mahogany brown or absolute black tones to maintain aesthetic balance with the precious case. For underwater use, FKM rubber or NATO nylon straps provide immediate reliability. Shell cordovan in bordeaux represents a compromise solution between elegance and moisture resistance.

Position the watch on a soft surface with lugs facing upward. Locate the lug pin (small metal cylinder running through the lug). Use a spring bar tool to depress the internal spring mechanism of the pin and extract the old strap. Insert the new strap, align the pin with the lug holes, and release the spring mechanism. Verify there is no vertical play. Do not force: the 20 mm strap should slide with minimal resistance.

Yes, any strap with a 20 mm lug width is compatible. Milano Straps manufactures aftermarket straps engineered to 20 mm specifications, with straight stainless steel pins and controlled thickness. Compatibility is guaranteed; construction quality determines final aesthetic pairing. Always verify dimensions before purchase.

A quality leather strap (alligator, calf, shell cordovan) with daily wear has an estimated lifespan of 3–5 years before first replacement. Vegetable tanning develops natural patina, increasing character through ageing. Constant humidity exposure accelerates wear; direct contact with seawater requires regular drying. Rubber straps have superior longevity (5–7 years) but gradually lose elasticity.