Strap for SeaQ Date Stainless Steel / Green / Rubber - Pin

The lug width of the SeaQ 1-39-11-13-63-07 is 20 mm. This measurement refers to the internal distance between the case lugs and determines compatibility with replacement straps. The measurement should be taken with a calliper, from the inner point of one lug to the other, to ensure accuracy and exclude effects of case distortion.

For the SeaQ, we recommend straps in alligator or vegetable-tanned calf leather, thickness 3.5-4.5 mm, with stainless steel or brushed silver buckles. For sports use, a NATO in cotton canvas or an FKM rubber strap offers practicality. Avoid synthetic leather or reconstituted leather, which compromise the artisanal quality of the watch.

Use a dedicated tool (spring bar tool) to remove the elastic pins (spring bars) from the lugs. Position the tool tip in the small hole on the pin, press gently inward to release the spring, then extract the pin. Insert the new strap by aligning the holes with the lugs, then release the pin with even pressure. Avoid forcing, which damages the internal edges of the case.

Yes, any strap with a 20 mm lug width is compatible, provided the thickness is between 3.5 and 4.5 mm. Quality aftermarket straps in leather, NATO or rubber will maintain your watch's functionality. Always check that the strap enters and exits the lugs without excessive resistance, to prevent premature wear at the contact points.

The lifespan of a leather strap depends on usage conditions. An alligator or vegetable-tanned calf strap, worn daily, maintains structural integrity for 3-4 years before showing wear at the flex points. The leather develops patina and natural colour shifts, signs of authenticity. In humid or salt-water environments, durability reduces to 18-24 months; in such cases, a rubber strap is the more practical and longer-lasting choice.