Strap for Senator Panorama Date Moonphase Stainless Steel / Blue / Bracelet

The lug width of the Glashütte Original Senator 100-04-05-12-70 is precisely 20 millimetres. This dimension was engineered to maintain visual harmony with the 40mm case diameter. If you intend to replace the original strap, measure the distance between the inner shoulders of the lugs using a digital calliper or precision ruler to ensure absolute accuracy before purchasing a replacement strap.

We recommend three primary material categories for the Senator 100-04-05-12-70. Alligator leather with vegetable tanning delivers formal elegance and develops rich patina over time; vegetable-tanned calf ensures absolute sobriety and adaptability to business contexts; shell cordovan represents the premium choice for those seeking superior resistance and intrinsic lustre. For informal wear, heavyweight cotton NATO and FKM rubber offer practicality whilst preserving the watch's minimalist profile.

Changing the strap on your Senator 100-04-05-12-70 requires a quality spring bar tool: this instrument releases the compression springs that retain the strap within the lugs. Position the watch with the caseback facing upwards, carefully insert the spring bar tool tip near the spring and lift with controlled pressure until the strap detaches. Repeat on the opposite side. For installation of the new strap, align the lug holes correctly and insert the springs with equal care. If you lack experience, consult a professional watchmaker or Atelier Casati Milano for secure strap changes.

Absolutely. The Senator 100-04-05-12-70 accepts any aftermarket strap with an exact 20mm lug width. Milano Straps offers a specialised collection of 20mm straps compatible with this case, crafted from premium materials including alligator, vegetable-tanned calf, shell cordovan, technical NATO, and FKM rubber. Each strap is constructed with meticulous attention to the watch's original proportions, guaranteeing aesthetic cohesion.

Leather strap longevity varies according to material type and usage patterns. An alligator strap with vegetable tanning typically lasts 3–5 years of daily wear, developing rich patina over time. Vegetable-tanned calf exhibits similar durability. Shell cordovan, owing to its dense fibre structure, can exceed 7–8 years of service. High-humidity environments, frequent perspiration and rain exposure reduce strap lifespan. Storing your watch in a dry environment and periodically applying hydrophobic treatments to the strap ensures superior longevity. Milano Straps provides rapid replacement services when your original strap reaches end of life.