Strap for Seamaster Planet Ocean 600M Co-Axial 45.5 Master Chronometer GMT Deep Black Sedna

The lug width of reference 215.63.46.22.01.001 is 22mm. This width is standard for the 45.5mm case diameter and represents the distance between the strap attachment pins on the case lugs. At MilanoStraps you will find all compatible straps in this size.

The choice depends on use and personal taste. For formal wear we recommend vegetable-tanned alligator in dark brown or black; for versatile daily use, shell cordovan offers a fascinating natural patina; for sports use and diving, FKM rubber or military NATO straps guarantee absolute practicality. The contrast between the black ceramic and Sedna Gold is best enhanced with dark straps that do not compete visually.

Changing the strap requires a specific tool called a spring bar tool. Position the flat end of the spring bar tool in the side hole of the pin to compress the internal spring, then remove the old strap. Repeat on the other side. Finally, insert the new strap into the lugs by aligning the pins with the holes and release the spring bar tool. For models in 18K Sedna Gold we recommend performing the operation with extreme caution to avoid scratches.

Absolutely yes. As long as the lug width is exactly 22mm, any artisanal strap is compatible. High-quality aftermarket straps, such as those made in genuine alligator or shell cordovan, often surpass Omega factory solutions in terms of aesthetic personality and aging over time. MilanoStraps offers certified straps in fine leather with an 18-month warranty.

The lifespan depends on the material, tanning method, and use. A quality artisanal vegetable-tanned alligator strap lasts 4-6 years in daily use before requiring replacement, though the patina improves over time. Shell cordovan is more durable (5-8 years) thanks to its natural density. Nylon NATO straps easily exceed 10 years. Regular maintenance (gentle cleaning with neutral soap, natural drying) extends the life. The Casati Milano atelier also offers renovation and restoration services for vintage straps.