Strap for Seamaster Aqua Terra 150M Shades Master Chronometer 34 Sedna Gold - Diamond / Lavender / Bracelet

The lug width of the 220.55.34.20.60.001 model is 16mm. This dimension is critical for compatibility: a strap must have a width of exactly 16mm to fit properly between the case lugs. You can verify this by measuring with a ruler the internal distance between the two case lugs.

For this 18-karat rose gold reference, we recommend cognac or dark brown alligator for natural color balance, vegetable-tanned calf leather for noble aging patina, or shell cordovan for maximum durability. NATO fabric straps are not recommended, as a Sedna Gold timepiece deserves superior tactile quality.

To change the strap, obtain a spring bar removal tool. Position the watch securely, insert the tool into the small lateral slots of the lug, apply gentle downward pressure to release the spring bar from its seat, then remove the used strap. Repeat the procedure on the second lug. Insert the spring bars into the new 16mm strap, position the watch, and snap the spring bars into place. Avoid excessive force that could damage the case.

Any aftermarket strap with a lug width of 16mm is compatible with the 220.55.34.20.60.001 model. Specialized suppliers offer straps in alligator, calf leather, shell cordovan, and rubber, customizable with initials, choice of finishes, and stitching thread. Ensure the strap is of appropriate quality for a Sedna Gold timepiece.

A high-quality leather strap with vegetable tanning can last 5-8 years with regular wear, while alligator tends to exceed 10 years. Shell cordovan, due to its density, can resist for over 12 years. Durability depends on frequency of use, moisture exposure, and periodic maintenance. Vulcanized rubber has an average lifespan of 4-6 years before becoming brittle.