Technical Archive

Archimede
Pilot UA7949-H1.1— lug 20mm

Archimede Pilot UA7949-H1.1: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Pilot 45 KS Stainless Steel / Black

Artisanal Note

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

Technical Specifications

Archimede UA7949-H1.1
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

UA7949-H1.1

Movement

ETA caliber 6498-1 Hours, Minutes, Small Seconds

The Heritage

The Archimede Pilot UA7949-H1.1 is a contemporary interpretation of German watchmaking tradition applied to aviation chronometers. It features a 45mm stainless steel brushed case with a high-contrast black dial and Air Force-style indices for instant readability. The ETA caliber 6498-1 manual-wind movement with exposed balance wheel provides certified precision and proven longevity. The 316L steel case with screw caseback offers integrated magnetic protection, reflecting its military heritage. The 20mm lug width is standard for mid-large pilot watches and balances visually with the 45mm case.

FAQ

What is the lug width of the Archimede Pilot UA7949-H1.1?

The lug width of the Archimede Pilot UA7949-H1.1 is 20mm. This dimension is standard for pilot watches with 45mm case diameter and ensures balanced proportions between the case mass and strap width. You can verify compatibility by measuring with a digital calliper the distance between the centres of the spring bar attachment pins.

Which strap is most suitable for the Pilot UA7949-H1.1?

For the Pilot UA7949-H1.1 we recommend a natural leather strap with vegetable tanning, in dark brown or burgundy tones, consistent with German aeronautical heritage. Alternatively, a black aged calfskin amplifies the austerity of the watch. For intensive use, a robust NATO canvas strap or FKM rubber maintains functional authenticity. The 20mm width allows experimentation with different combinations.

How do you change the strap on an Archimede Pilot watch?

The strap is replaced by removing the spring bar pins from the watch lugs. Use a dedicated spring bar tool to push the pin towards the centre, freeing one end of the strap. Repeat for the other side. Insert the new 20mm strap by aligning the holes with the pins, then reinsert the pins by pushing until they click into place. Verify that the strap is securely attached before wearing the watch.

Can I use an aftermarket strap on this model?

Yes, any strap with a 20mm lug width is compatible with the UA7949-H1.1. The artisanal straps offered by Milano Straps are manufactured with rigorous construction methodologies and maintain the dimensional tolerances required. Mechanical compatibility is guaranteed by the standardisation of lug width: 20mm is an established standard for pilot watches in this category.

What is the lifespan of a natural leather strap?

A natural leather strap with vegetable tanning, subjected to moderate daily use, maintains structural integrity for 3-5 years. Development of patina and aesthetic ageing are positive characteristics, signs of authenticity. Prolonged exposure to humidity, salt sweat and UV rays accelerates wear. Periodic maintenance (cleaning, conditioning with specific oils) extends useful life. Shell cordovan or alligator straps maintain greater resistance over time due to the natural structure of the fibres.