Mühle Glashütte · Terranaut

Strap for Terranaut I Trail Black / Bracelet

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter44 mm
ReferenceM1-40-53-MB
FamilyTerranaut
MovementMühle Glashütte caliber MU 9413 hours, minutes, small seconds | date, day | Chronograph
Year2012
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Terranaut M1-40-53-MB

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Terranaut M1-40-53-MB, seen from the bench

The Terranaut from Mühle Glashütte mounts the automatic caliber MU 9413 with chronograph, date and day of the week functions. The watch features hours, minutes, small seconds and day indication in addition to the date. The case is equipped with 22mm lugs for the strap.

Frequently asked questions

What is the lug width of the Mühle Glashütte Terranaut M1-40-53-MB?

The lug width of the Mühle Glashütte Terranaut M1-40-53-MB is 22mm. This measurement represents the linear distance between the two strap attachment points beneath the case. It is essential to verify this measurement before purchasing a compatible strap to ensure proper fit and wearable stability.

Which strap is most suitable for the Terranaut M1-40-53-MB?

For the Terranaut, straps in vegetable-tanned calf leather (black, dark brown) or alligator (dark blue, British Racing green) are recommended. For sporadic use, high-quality rubber straps guarantee waterproofing and durability. Reinforced nylon NATO straps impart a contemporary military aesthetic perfectly suited to the model's exploratory character.

How do I change the strap on a 22mm lug width watch?

To change the strap, use a dedicated spring bar tool or extraction device. Position the tool's tip into the small lateral hole beneath the case, gently press the pin inward to release the spring, and remove the old strap. Insert the new strap by aligning the holes and press the pin until it clicks into place. Always verify that the pin is fully secured before wearing the watch.

Can I use aftermarket straps with my Mühle Glashütte Terranaut?

Yes, provided the straps are specifically constructed for a 22mm lug width. High-quality aftermarket straps in vegetable-tanned leather, alligator, rubber, or NATO are fully compatible with the Terranaut. Milano Straps offers an extensive selection of customisable 22mm straps ready for dispatch.

How long does a leather strap last on a watch like the Terranaut?

Durability depends on material and usage. A vegetable-tanned calf leather strap has an average lifespan of 3-5 years with daily wear. Alligator, owing to its more robust structure, may last 5-7 years. Lifespan extends significantly if the strap is removed at night and the watch is not frequently immersed. Proper maintenance—drying the strap after humidity exposure and conditioning the leather occasionally—substantially prolongs useful life.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only