Strap for Tetra Neomatik 39

The Nomos Glashütte Tetra 421 features a lug width of 20mm. This dimension requires straps crafted with sartorial precision, where the inner keeper and strap geometry must maintain exact proportions. Correct measurement is taken from the centre of one lug to the centre of the opposite lug, excluding the attachment collar.

For the Tetra 421, we recommend alligator niloticus with vegetable tanning in cognac or natural leather. The natural grain of the hide dialogues with the naked geometry of the case. Valid alternatives: bordeaux vitello for formal elegance, charcoal grey NATO for sporting versatility, FKM rubber for technical use.

Changing the strap on the Tetra 421 requires a dedicated strap removal tool to extract the lugs from the case seats. Position the watch on a soft cloth, locate the small lateral hole on the lug, insert the removal tool, and press gently outward. The lug will slide out of its seat. For fitting the new strap, align the channels and insert the lug with a decisive yet controlled movement.

Yes, provided the strap is specifically constructed for the 20mm lug width. On milanostraps.it you will find a selection of artisanal compatible straps: leather, NATO, rubber, all ready for shipping and customisable to your aesthetic requirements. Avoid unverified straps as they may damage the case attachment seats.

A quality leather strap (alligator, vitello, shell cordovan) maintains structural integrity between 3 and 5 years with daily wear, depending on exposure frequency to moisture and direct sunlight. Vegetable tanning develops a protective patina over time, extending useful life. Periodically clean gently with a damp cloth and allow the watch to breathe in dry environments to preserve the strap.