Strap for Seamaster Diver 300M Co-Axial 44 Regatta Chronograph Stainless Steel / Black / Bracelet

The Omega Seamaster Diver 300M reference 212.30.44.50.01.002 is equipped with a 20mm lug width. This measurement is standard for the model and determines compatibility with aftermarket straps. To verify, measure the distance between the case lugs using a digital caliper, excluding the case itself.

The choice depends on use and aesthetic preferences. Alligator offers elegance and natural texture, ideal for formal transitions. Vegetable-tanned leather provides patina over time and versatile aesthetics. Shell cordovan is the premium choice for durability and lustre. For technical use, rubber or NATO straps guarantee robustness and practicality without functional compromise.

Strap change is performed by removing the side lugs of the case using a dedicated tool (spring bar tool). The pins are extracted by pressing gently from underneath, allowing them to come out of the lugs. Insert the new pins into the strap and secure them in the case lugs, ensuring they are correctly seated. If you are unsure, consult a certified Omega professional.

Absolutely. Your model, equipped with a 20mm lug width, is perfectly compatible with any quality 20mm strap. Verify that the strap is suitable for diving use if you intend to wear the watch in water; leather straps are not recommended for repeated immersions, while rubber and NATO offer resistance to prolonged moisture.

Durability varies based on material and use. Alligator and vegetable-tanned leather offer 4-6 years of daily wear, developing patina over time. Shell cordovan can exceed 8 years thanks to the leather's inherent resistance. Prolonged exposure to humidity, sweat and UV rays shortens lifespan. A well-maintained strap, stored in a dry environment and treated periodically, maintains aesthetics and functionality well beyond initial expectations.