Strap for Senator Excellence Perpetual Calendar Stainless Steel / Silver / Bracelet

The lug width of the Glashütte Original Senator 1-36-02-01-02-70 is 21mm. This specific dimension requires straps with 21mm lug compatibility. Using 20mm or 22mm straps will not fit properly on the stainless steel case lugs.

The optimal choice depends on intended use: for formal occasions, a dark brown alligator or vegetable-tanned calf in black or grey accentuates the elegant perpetual calendar complication. For daily wear, shell cordovan offers superior durability and develops a noble patina. A slate-blue NATO preserves the Saxonian design even in sporty contexts. All must be 21mm to ensure proper fitment to the lugs.

Remove the spring bars (or fixed pins) securing the strap to the lugs using a dedicated strap-changing tool to avoid case scratching. Place the watch on a soft surface, lift one pin from its lug, slide the new 21mm strap into position, and reinsert the pin carefully. Precision is essential, as the clearances are tight and improper handling risks damage to the case.

Any high-quality strap with 21mm lug width is compatible, including leather, fabric, and rubber options. Artisanal straps in alligator, vegetable-tanned calf, shell cordovan, or FKM rubber are strongly recommended. Always verify that the spring bar or pin system matches the watch's attachment mechanism (typically straight pins for the Senator). Steel deployant buckles provide secure, refined fastening without compromise.

A quality artisanal strap in calf or shell cordovan lasts 3 to 7 years with daily wear, depending on tannage method and humidity exposure. Vegetable-tanned leather ages beautifully, developing character; shell cordovan resists longer whilst maintaining shape. Longevity also depends on maintenance: minimise excessive moisture and dirt. Replace when the strap loses elasticity or displays cracks.