Certina
DS Action C013.427.17.051.00— lug 20mm

The lug width of the Certina DS Action C013.427.17.051.00 is 20 millimetres. This measurement determines compatibility with aftermarket straps and represents the space between the metal pins (spring bars) of the case. To verify the lug width correctly, use a digital calliper and measure the distance between the attachment holes, or remove the original bracelet and measure the spacing between the pins.

Strap selection depends on intended use. For formal or refined daily contexts, we recommend alligator or vegetable-tanned calf leather in dark brown or black, which contrasts elegantly with the brushed steel case. For water sports or humid environments, an FKM rubber strap offers superior grip and resistance. A NATO in polyamide is ideal for those seeking practicality and quick changes. The 45mm diameter accommodates decisive strap choices: thick materials and marked textures enhance the chronograph's character without overweighting it.

Removing and installing a strap with 20mm lug width is straightforward. Obtain a spring bar tool (a small lever designed to remove the metal pins), position the tool's small fork under the metal pin from the side of the strap you wish to remove, apply gentle upward pressure to release the pin, then extract the old strap. Position the new strap by aligning the attachment rings with the case holes, insert the pins and press until you feel the locking click. Verify that the strap is securely fastened before wearing the watch.

Any strap fitted with standard attachment rings for 20mm lug width is compatible with the Certina DS Action C013.427.17.051.00. Milano Straps offers a comprehensive range: noble leathers (alligator, shell cordovan, calf), NATO straps in synthetic fibre, FKM rubber straps—all with certified straight attachment rings. Always verify that the attachment is dual (rings on both sides) and that construction quality is certified to ensure safety and durability over time.

Leather strap longevity depends on material, tanning method and usage. A quality artisanal alligator or vegetable-tanned calf strap, with regular maintenance (cleaning with a damp cloth, natural air drying, annual balm application), maintains full functionality for 5–8 years. The natural patina that develops over time is a desired characteristic, not deterioration. A shell cordovan strap may last even longer due to superior material density. Daily wear on a 45mm chronograph accelerates wear slightly, but remains minimal if the strap is constructed using rigorous sartorial techniques and first-grade leather selection.