Strap for Senator Diary Stainless Steel / Black / Alligator / Pin

The lug width of the Glashütte Original Senator 100-13-02-02-01 is 20 millimetres. This measurement represents the distance between the two spring bars that attach the strap to the case. It is essential to verify this compatibility before purchasing an aftermarket strap, as even a minor variation will compromise the fit and aesthetic integrity of the watch.

The optimal strap choice depends on usage and personal preference. For formal occasions, we recommend alligator leather in vegetable-tanned finish or shell cordovan in burgundy red, which enhance the classical nature of the Senator. For daily wear, a NATO strap in grey-blue Cordura canvas offers durability and practicality. Rubber remains the ideal solution if the watch is worn in humid environments or for sporting activities.

Strap replacement requires a specialised tool called a spring bar tool. Position the tool under the spring bar on one side, lift the tension spring gently, and slide the bar out of the case lugs. Repeat on the other side. To install the new strap, insert the spring bars into the lug holes and ensure the tension springs click into position. Avoid forcing the bars to prevent damage to the case.

Yes, any aftermarket strap with a 20-millimetre lug width is compatible with the Senator 100-13-02-02-01, regardless of the manufacturer. Always verify the technical specification with the seller before purchase. Milano Straps offers a curated selection of artisanal 20mm straps designed for luxury timepieces such as this, with options in premium leather, NATO, and rubber materials.

A high-quality artisanal leather strap, with vegetable tanning, has an average lifespan of 3–5 years with regular daily wear. Longevity depends on ambient humidity, frequency of use, and maintenance practices. Keep the strap dry, avoid prolonged direct sunlight exposure, and clean periodically with a soft cloth. Shell cordovan, owing to its density, can last 7–10 years. NATO and rubber straps offer greater durability, exceeding 10 years of continuous use.