Technical Archive

Eterna
Contemporary 2945.53.41.1337— lug 20mm

Eterna Contemporary 2945.53.41.1337: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Avant-Garde Date Two Tone / Black / Strap

Artisanal Note

"This model requires a precise 20mm lug width to preserve the original sartorial balance."

Technical Specifications

Eterna 2945.53.41.1337
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

2945.53.41.1337

Movement

Sellita caliber SW200-1 a Hours, Minutes, Seconds | Date

The Heritage

The Eterna Contemporary 2945.53.41.1337 features a 42mm stainless steel case with a Sellita SW200-1 automatic movement, delivering ±10 seconds daily accuracy and 38-hour power reserve. The dial showcases applied indices and enamelled steel hands with a date window at 3 o'clock. Water-resistant to 100 metres, this watch represents contemporary Swiss watchmaking philosophy since Eterna's 1856 foundation. The 20mm lug width ensures versatile strap compatibility.

FAQ

What is the lug width of the Eterna Contemporary 2945.53.41.1337?

The lug width of the 2945.53.41.1337 is 20mm. This measurement refers to the horizontal distance between the two attachment points of the strap on the case. At 20mm, this is considered an intermediate dimension offering excellent versatility, allowing the use of sports, elegant, and formal straps without aesthetic compromise.

Which strap type is recommended for the Eterna Contemporary 2945.53.41.1337?

For the Contemporary 2945.53.41.1337, genuine alligator straps are recommended for formal occasions, vegetable-tanned calf leather for versatile everyday wear, NATO canvas straps for sports and casual contexts, or vulcanised rubber for water-related activities. The choice depends on the dial colour and intended use, maintaining aesthetic coherence with the case's sober geometry.

How do you change the strap on an Eterna Contemporary?

Strap replacement requires a specific tool: spring bar tools. Position the watch on a stable surface and insert the tool into the lug slot to compress the internal spring, then gently extract the old strap. Repeat on the other side. Insert the new strap, aligning it perfectly with the holes and ensuring the spring bar clicks into position. If inexperienced, consulting a professional is advisable.

Are there aftermarket straps compatible with the Eterna Contemporary 2945.53.41.1337?

Yes, the 20mm format of the 2945.53.41.1337 allows use of a wide range of specialised aftermarket straps. Milano Straps offers a dedicated collection of 20mm straps, crafted in various materials and finishes: alligator, shell cordovan, calf leather, NATO, and rubber. All are compatible with the Contemporary's lugs and ready for dispatch, with customisation options available.

What is the average lifespan of a leather strap for the Eterna Contemporary?

The lifespan of a leather strap depends on usage and maintenance. A quality artisanal vegetable-tanned calf strap has a lifespan of 2-3 years with moderate daily wear. Alligator, being more resistant, can last 3-5 years. To extend longevity, avoid prolonged moisture exposure, clean regularly with a soft dry cloth, and occasionally apply a conditioner formulated for fine leathers. The patina that develops over time is not a defect but an aesthetic enrichment.