Strap for Seamaster Diver 300M Co-Axial 36.25 Stainless Steel / Black / Bracelet / Ceramic

The lug width of reference 212.30.36.20.01.002 is 20mm. This dimension is specific to the 36.25mm case variant and reflects the harmonious proportions of the case. It is essential to measure the lug width correctly with a caliper positioned internally on the lugs to ensure that the alternative strap fits without structural compromise.

The choice of strap depends on intended use. For formal contexts, alligator or shell cordovan in vegetable tanning offer sophistication and patina that ages beautifully. For water sports, rubber or NATO straps guarantee practicality. Natural tanned calf represents a modern balance between authenticity and versatility. The most masterful chromatic dialogue is created by pairing the cobalt blue dial with earthy tones: cognac brown, deep black, or taupe grey.

The procedure requires specialized tools: a spring bar removal tool to extract the anchor pins from the case lugs. Gently insert the tool into the lateral spaces of the lugs to release the elastic pins, then remove the old strap. Position the new spring bars in the eyelets of the new strap and reinsert the assembly into the lugs, ensuring the pins click completely into place. If you are inexperienced, entrust the operation to a professional watchmaker to avoid scratching the case.

Any strap with 20mm lug width is compatible with the 212.30.36.20.01.002. On milanostraps.it you will find artisanal straps in alligator, shell cordovan, calf, vegetable tanning, and rubber, all customizable in size, initials, and stitching thread choice. For a bespoke experience, the Casati Milano atelier creates made-to-measure straps with an 18-month warranty.

Durability depends on the quality of tanning and use. A high-quality alligator or shell cordovan strap in vegetable tanning typically lasts 3-5 years with regular daily wear. Vegetable-tanned leather develops a coveted patina over time, improving aesthetically with controlled aging. Factors such as sun exposure, humidity, and frequency of wear affect longevity. To extend the life of the strap, avoid prolonged contact with fresh water and store in dry environments. Casati Milano straps include an 18-month warranty.