Strap for KonTiki Four-Hands Full Black / Bracelet

The lug width of the Eterna Adventure 1598.33.41.1722 is precisely 20 millimetres. This measurement is determined by the constructive geometry of the 42-millimetre case and must be respected strictly to avoid aesthetic gaps or excessive overhang. Correct measurement is taken along the inner edge of the spring bars that connect the strap to the case lugs.

The optimal strap depends on intended use. For formal and professional contexts: alligator with vegetable tanning or calf with vegetable tanning are the ideal choices. For marine or sports environments: technical fabric NATO straps or fluorocarbon rubber straps. Tobacco or cognac alligator offers the finest aesthetic balance with the brushed steel case, developing a golden patina over time.

Strap replacement requires removal of the spring bars using a dedicated tool (spring bar tool). Locate the small hole on the case lug, insert the tool to compress the spring, and gently extract. Repeat on the opposite side. Align the new 20mm strap and reinsert the spring bars. Verify that the pins are fully seated before wearing the watch.

Yes, aftermarket straps are compatible provided they respect the 20-millimetre lug width specification precisely. Straps of different widths (18mm or 22mm) will result in improper installation or visible gaps. Source straps from specialised manufacturers who guarantee tight construction tolerances and quality materials (leather, NATO, rubber). Avoid generic straps with loose tolerances.

Leather strap longevity depends on material and usage patterns. Vegetable-tanned alligator guarantees 3-4 years of daily wear with proper maintenance (monthly cleaning, quarterly conditioning). Vegetable-tanned calf offers 2-3 years before concentrated wear becomes visible. Shell cordovan, owing to its superior density, can endure 5-7 years. Textile NATO straps last 4-5 years. Maintenance includes cleaning with a damp cloth and periodic conditioning with products designed for vegetable-tanned leather.