Strap for Tangente 35 Four Seasons Fall / Akane

The lug width of the Nomos Glashütte Tangente 139.S18 is 18 millimetres. This dimension is essential for selecting compatible straps. Measurement should be performed using a digital calliper positioned at the deepest anchorage point between the two lugs of the case: the value must register precisely at 18.00 mm to ensure a secure fitting without lateral movement.

For the Tangente 139.S18, straps that respect the minimalist philosophy of the case are recommended. An alligator leather strap with vegetable tanning maintains the formal character of the watch; shell cordovan offers a natural patina that evolves over time; a NATO strap in ballistic fabric ensures versatility without aesthetic compromise; synthetic rubber represents the ideal solution for intensive daily use. The choice depends on the intended use and the desired level of formality.

The strap change on the Tangente 139.S18 is performed using a dedicated tool (spring bar tool) or a small flathead screwdriver. Position the watch on a soft surface, locate the lateral pins that secure the strap to the lugs, gently push the pin towards the inside of the case to release one end of the strap. Repeat the operation on the opposite lug. Insert the new strap by aligning its holes with the case pins, then press until the locking click is heard.

Any strap with an 18 millimetre lug width is compatible with the Nomos Tangente 139.S18. It is essential to verify the strap width before purchase: a width smaller than 18 mm would cause lateral movement during wear; a larger width would make mounting impossible. Quality aftermarket straps are available in leather (alligator, cordovan, calf), fabric (NATO, canvas) and synthetic rubber.

The lifespan of a leather strap depends on intensity of use and material quality. A vegetable-tanned leather strap of high manufacturing quality maintains structural integrity for 3-5 years of daily use. Prolonged exposure to moisture, direct heat and perspiration accelerates the natural ageing of the leather. Periodic maintenance—gentle cleaning with a damp cloth and conditioning with natural waxes—significantly extends the strap's lifespan. Annual strap replacement allows the Tangente to be maintained in optimal condition at all times.