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

The lug width of this model is 16 millimeters. This is the internal distance between the two case lugs (pin lugs). To measure correctly, position the watch with the caseback facing down and measure the internal space where the strap connects. This measurement is crucial for compatibility: a strap that is too tight or too loose compromises both aesthetics and wearability.

Alligator with vegetable tanning is the noblest choice: regular scales and natural patina enhance the rosy tone of the gold. For elegant contrast, deep blue in thick calf emphasizes the blue of the dial. If you prefer sporty versatility, black shell cordovan maintains refinement and daily practicality. Avoid cold or silvery tones: Sedna Gold requires straps that respect its warm character.

The change is simple and requires no specialized tools. Locate the pin lugs (the pins that secure the strap to the case), apply pressure from the back with a flat and blunt tool (or use a spring bar tool), and slide the pin out of its housing. Repeat on the other side. The new strap must have compatible 16 millimeter lugs. If you prefer to avoid any risk, Casati Milano services offer professional strap change with warranty and guidance on leather selection.

Yes, provided they respect the 16 millimeter lug width and are made of durable materials. Artisanal straps in alligator, calf, shell cordovan and vegetable-tanned leather offer superior customization compared to original Omega straps, while maintaining full compatibility. Milano Straps offers collections dedicated to the 16mm size, with customization options in color, initials and stitching thread for conscious customization.

Durability depends on the material and usage. A quality alligator strap with vegetable tanning, worn daily, will last 5-8 years before requiring restoration. Thick calf tends to wear faster (3-5 years), while shell cordovan, if well cared for, can last 10+ years while developing a fascinating patina. Exposure to water, sweat and sunlight accelerates aging. Casati Milano's 18 month warranty covers manufacturing defects, and the laboratory offers restoration and repair services to extend the life of your strap.