Strap for Seamaster Aqua Terra 150M Master Chronometer 41 Stainless Steel / Grey / Alligator

The lug width of the Omega Aqua Terra 220.13.41.21.06.001 is 20 millimetres. This is the inner diameter of the case lugs, the space where the strap is inserted. It is essential to verify this measurement before ordering a strap, as straps of different widths will not fit correctly.

For the Aqua Terra 220.13.41.21.06.001 we recommend alligator straps in cognac colour for classic elegance, vegetable-tanned calf for natural patina that evolves over time, or bordeaux shell cordovan for those seeking a premium option. Pearl grey NATO straps maintain the original sporty aesthetic, while black FKM rubber straps are ideal for water use.

To change the strap you need two tools: a plastic lever (to protect the case) and a small hammer or a dedicated tool. Insert the lever under the lug, gently lift the hinge pin with the tool tip, and extract the old strap. Insert the new one by aligning the holes, reinsert the pin and verify the fastening. For those who prefer to avoid risks, Casati Milano offers a strap replacement service at the atelier.

Yes, provided it is certified for the 20 millimetre lug width. On milanostraps.it all straps in the 20mm collection are tested for compatibility with this model. Always verify that the strap enters and exits the lugs without forcing, and that the hinge holes are correctly aligned.

The lifespan depends on the material and use. A vegetable-tanned calf strap typically lasts 3-5 years with regular rotation (worn 2-3 times a week). Alligator tends to last longer. Shell cordovan, if properly maintained, can exceed 5-7 years. An 18-month warranty is an industry standard; some ateliers like Casati Milano offer this coverage on their custom work.