Nomos Glashütte
Tetra 401
Nomos Glashütte Tetra 401: strap made to measure on the watch at the Casati Milano atelier, by appointment.
Technical Specifications
Nomos Glashütte 401401
Nomos Glashütte caliber Alpha Hours, Minutes, Small Seconds
The strap for this watch is made to measure
On the Nomos Glashütte Tetra the bracelet is drawn as part of the case: no catalogue strap will fit. In the atelier we take the measurements on the watch itself and build the strap on the piece — that is the work of Casati Milano.
Book a consultation →FAQ
Which strap is recommended for the Tetra 401?
For the Tetra 401, we recommend straps in vegetable-tanned Italian leather with natural patina (aged brown or burgundy), or alligator skin with tight grain. Both create an aesthetic dialogue with the rigid, Bauhaus geometry of the case. Alternatively, burgundy shell cordovan offers sophisticated contrast and tactile memory. For a summer approach, cotton NATO straps maintain the design severity of the model.
How do I change the strap on the Nomos Glashütte Tetra 401?
The Tetra 401 uses standard spring bars. Position the watch on a soft cushion, use a spring bar tool to gently compress the spring bar and extract the old strap from the lugs. Insert the new strap by aligning the holes with the lugs and release the spring bar. Verify that the strap is properly secured before wearing. If unsure, consult a professional watchmaker.
How long does a leather strap last on the Nomos Glashütte Tetra 401?
A naturally vegetable-tanned leather strap, with moderate use and regular maintenance (drying after water exposure, annual conditioning with neutral oil), typically lasts 3–4 years before showing significant wear. Shell cordovan, owing to its natural density, can last 5–6 years. Factors such as humid climate, frequent perspiration, and lack of maintenance reduce durability. The natural patina that develops is desirable and part of the watch's character.