Technical Archive

Mühle Glashütte
ProMare M1-42-25-SB— lug 20mm

Mühle Glashütte ProMare M1-42-25-SB: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Promare Lady Mother of Pearl / Strap

Artisanal Note

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

Technical Specifications

Mühle Glashütte M1-42-25-SB
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

M1-42-25-SB

Movement

Mühle Glashütte caliber Mühle SW 200-1 Hours, Minutes, Seconds | Date

The Heritage

The Mühle Glashütte ProMare features the automatic SW 200-1 caliber with hours, minutes, seconds and date indication. The 20mm-lugged watch is configured as a sporty timepiece from the German manufacture. The movement offers essential functions in a traditional mechanical construction.

FAQ

What is the lug width of the Mühle Glashütte ProMare M1-42-25-SB?

The lug width of the M1-42-25-SB is 20 millimetres. This dimension is standard for the ProMare model and is ideal for elegant, slender strap profiles that align with Glashütte's manufacturing philosophy. You can verify compatibility by measuring the distance between the two lugs (attachment pins) on the case.

Which strap pairs best with the mother-of-pearl dial of the ProMare?

A black or dark brown alligator strap (vegetable-tanned) is the preferred choice for the M1-42-25-SB. The natural texture of the scales dialogues with the iridescence of the mother-of-pearl without competing visually. Alternatively, grey-pearl Italian calf or a navy NATO strap with grey stripes maintains the chromatic harmony of the satin case and ceramic elements.

How do you change the strap on a Mühle Glashütte ProMare watch?

Changing the strap requires a spring bar tool to compress the attachment pins on either side of the case. Once the old strap is removed, insert the new strap's pins into the lug holes and release carefully. If you are inexperienced, we recommend seeking a specialist watch service to avoid scratching the satin case finish.

Is an aftermarket strap compatible with the ProMare M1-42-25-SB?

Yes, any strap with a 20-millimetre lug width is mechanically compatible. However, we recommend choosing an artisanal-quality strap in alligator, shell cordovan, Italian calf, or FKM rubber to respect the construction level of the Mühle movement and case. Budget or synthetic straps will undermine the overall experience of the watch.

How long does a leather strap last on a dive watch like the ProMare M1-42-25-SB?

A high-quality leather strap (vegetable-tanned alligator or Italian calf) typically lasts 5–7 years with regular use and ordinary maintenance. Frequent water exposure (the M1-42-25-SB is water-resistant to 300m) shortens leather lifespan: in this case, alternating with an FKM rubber or NATO strap is advisable. The patina developed through vegetable tanning enhances aesthetic appeal over time.