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

The Glashütte Original SeaQ 1-39-11-13-63-37 features a 20 mm lug width. This dimension, narrower than contemporary standards (typically 22 mm), is a deliberate design choice that maintains elegant proportions between case and strap. The measurement is taken internally, between the two direct contact points of the lug.

Polished alligator leather represents the canonical aesthetic choice: regular scales harmonise naturally with the case's restraint. Vegetable-tanned calf offers tactile authenticity and a patina that evolves over time. For seasonal versatility, woven NATO fabric allows frequent rotation. FKM rubber is ideal for intensive aquatic use due to UV and oil resistance.

Strap replacement requires a dedicated spring bar tool: position the instrument beneath the lug, apply gentle pressure to disengage the spring, and extract the pin. Repeat for both sides. Installation of the new strap follows the reverse sequence. This operation is recommended at a qualified horologist to prevent case damage.

Any strap with a 20 mm lug width is mechanically compatible. Milano Straps offers a specialised collection in artisanal leather, NATO fabric, and technical rubber, all at 20 mm. However, aesthetic compatibility benefits from straps that respect the sport-elegant vocation of the model: superior materials and finishes that do not contrast with the watch's constructive simplicity.

A quality leather strap (alligatore or vegetable-tanned calf) mounted on a SeaQ has a lifespan of 3–5 years with daily use, extendable to 7–8 years with seasonal rotation. Longevity depends on UV exposure, moisture contact, and periodic maintenance. Annual application of a conserving balm slows natural ageing. The contact zone with the buckle is the critical point: when properly reinforced during artisanal manufacturing, resistance increases significantly.