Strap for DB25 Moon Phase Starry Sky White Gold / Sapphire

The DB25SJWS3 is fitted with a precision lug width of 20 mm, measured between the centre points of the spring bar holes. This dimension is specific to the 40 mm case and is non-negotiable: a strap of different width would introduce mechanical play and compromise aesthetic harmony. Measurement must be performed with a digital calliper positioned perpendicularly to the lugs, without applying pressure to the white gold attachment points to prevent deformation.

To maximise the aesthetic identity of the DB25SJWS3, we recommend genuine alligator leather straps with coarse grain, which dialogue elegantly with the cool luminosity of white gold. Alternatively, vegetable-tanned calf offers rich patina development and daily versatility. For sporty or daytime contexts, high-twist NATO straps maintain sophistication whilst reducing formality. FKM rubber is ideal for superior water resistance and skin adhesion in humid environments.

De Bethune employs an integrated lug system where the lugs are part of the white gold case itself. Strap changing requires a dedicated removal tool (spring bar tool) to compress the elastic pins without scratching the gold. We recommend entrusting this operation to a certified watchmaker, particularly for cases of such significant value. Milano Straps offers qualified mounting service at the Casati Milano atelier by appointment.

Yes, any quality strap with a 20 mm lug width is mechanically compatible with the DB25SJWS3. However, mechanical compatibility does not guarantee aesthetic harmony: we advise selecting materials and colours that respect De Bethune's independent luxury identity. Avoid low-quality synthetic straps, as they amplify the conflict between case refinement and accessory mediocrity. Milano Straps offers a curated selection of artisanal straps specifically suited to this timepiece.

The longevity of a natural leather strap depends on the material, tanning method and frequency of wear. Genuine alligator with vegetable tanning, worn daily, survives 3-5 years before replacement is warranted for aesthetic deterioration. Robust calf can reach 4-6 years. FKM rubber offers superior durability (7-10 years) but requires regular cleaning. Factors such as exposure to perspiration, humidity and sunlight accelerate ageing. Rotating between different straps significantly extends the useful life of each piece.