Strap for Seamaster Planet Ocean 600M Co-Axial 37.5 Red Gold / White Planet St. Moritz

The lug width of the Seamaster Planet Ocean 232.63.38.20.04.001 is 20mm. This measurement is calculated between the inner shoulders of the case lugs. It is a specific dimension for this model, designed to maintain correct visual proportions on a 37.5mm case. To verify the measurement, measure the distance between the two inner sides of the horizontal lugs with a digital caliper.

For this Red Gold case, we recommend a honey alligator with natural grain, which enhances the nobility of the metal without competing visually. Alternatively, vegetable-tanned calf dyed midnight blue resonates with the dial and maintains everyday versatility. For those who actively use the watch in water, an FKM rubber strap with canvas insert preserves the original underwater functionality with superior durability.

The Seamaster Planet Ocean 232.63.38.20.04.001 features a standard spring bar system. Use a spring bar tool: insert the thin blade into the lateral spaces of the case, under the spring, gently press upward to release one end of the lug, then repeat on the other side. Remove the complete bracelet, clean the seat, then insert the new strap ensuring that the spring bars position correctly in the case seats.

All straps and bracelets with a 20mm lug width are compatible with the 232.63.38.20.04.001. Always verify the width before ordering: a 20mm strap must be exactly 20mm wide between the inner shoulders. Avoid straps for 22mm or 18mm lugs, as they will not fit correctly in the case lugs and may damage it.

A high-quality artisanal leather strap, made from noble materials such as alligator or shell cordovan, lasts an average of 4-6 years with daily use. Durability depends on UV exposure, perspiration, humidity, and maintenance. A vegetable-tanned strap that is well cared for and regularly dried can last 7-8 years. FKM rubber straps have greater durability, lasting 8-10 years, thanks to chemical resistance and absence of biological degradation.