Strap for Seamaster Aqua Terra 150M Master Chronometer 34 Sedna Gold / Diamond / Wave Sapphire / Bracelet

The lug width is 16mm. This parameter is determined by the width of the lug bar that connects the spring bars to the case. All Aqua Terra 220.55 models at 34mm feature 16mm lugs, regardless of dial color or case finish.

For a timepiece in 18-karat rose gold, alligator represents the most natural choice: the regular texture creates a visual dialogue with the Teak dial. Toasted brown, hazelnut, or polished black alligator tones contrast elegantly with rose gold. Excellent alternatives are vegetable-tanned calf in burgundy or cognac, or natural brown shell cordovan.

The strap is replaced using two spring bar removers to extract the metal pins from the lugs. Position the tool on the side of the case, gently compress the internal spring, and slide the pin outward. Once the lugs are freed, the old strap comes away easily. Reverse the procedure to mount the new strap, ensuring the pins engage correctly in the lug slots.

Yes, any strap with a 16mm lug width is mechanically compatible with the 220.55.34.20.99.005. However, to ensure constructive coherence and lasting quality over time, we recommend straps made from premium leathers (alligator, vegetable-tanned calf, shell cordovan) and solid stitching, not generic eco-leather or nylon straps.

Durability depends on the leather and usage conditions. High-quality alligator or shell cordovan typically lasts 3–5 years with daily wear and care: avoid prolonged water exposure, dry quickly if exposed to perspiration, and occasionally apply a protective balm. Vegetable-tanned calf tends to develop patina more rapidly but remains structurally sound for 4–6 years. The quality of stitching is equally decisive: a saddle stitch with waxed thread resists better than simple stitching.