Technical Archive

Glashütte Original
Senator 1-37-01-03-02-07— lug 21mm

Glashütte Original Senator 1-37-01-03-02-07: 21mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Senator Chronograph Panorama Date Stainless Steel / Black / Calf / Pin

Artisanal Note

"This model requires a precise 21mm lug width to preserve the original sartorial balance."

Technical Specifications

Glashütte Original 1-37-01-03-02-07
Lug Width
21 mm

The essential strap measurement.

Browse 21mm straps →
Reference

1-37-01-03-02-07

Movement

Glashütte Original caliber 37-01 Hours, Minutes, Small Seconds | Big Date | Chronograph, Column wheel, Flyback | Power Reserve Indicator

The Heritage

The Glashütte Original Senator is powered by the manufacture caliber 37-01 with flyback chronograph functions with column-wheel and power reserve indicator. The dial features hours, minutes, small seconds and the characteristic big date of the German brand. The case uses 21mm lugs.

FAQ

What is the lug width of the Glashütte Original Senator 1-37-01-03-02-07?

The Glashütte Original Senator 1-37-01-03-02-07 features a 21mm lug width. This measurement is standard across the Senator family and is determined by the internal distance between the spring bar pins that attach the strap to the case. The 21mm width ensures optimal lateral stability on the 42mm case.

Which strap is most suitable for the Senator 1-37-01-03-02-07?

For the Senator 1-37-01-03-02-07, we recommend alligator in dark shades (brown, black) or vegetable-tanned calf leather. Alligator pairs naturally with the brushed steel finish, whilst calf develops deep patina over time. For sporting use, technical NATO straps offer versatility. Vulcanised rubber is ideal for humid or marine environments due to water resistance.

How do you change the strap on this watch?

Strap replacement requires a spring bar tool to compress the elastic pins securing the strap to the case lugs. Position the tool in the pin's seat, push inward, and slide the pin out of the case lug. Repeat for both sides. For the new strap, insert the pin along the opening, release the tool, and ensure the pin is firmly seated on the opposite side.

Is an aftermarket strap compatible with the Senator 1-37-01-03-02-07?

Yes, any quality artisanal strap with 21mm lug width is geometrically compatible with the Senator 1-37-01-03-02-07. Always verify that the strap features standard spring bar holes. Aftermarket straps guarantee full compatibility whilst maintaining the Saxon aesthetic, often improving colour and material flexibility beyond official options.

How long does a natural leather strap last on this model?

Durability depends on tanning method, use, and maintenance. An alligator or vegetable-tanned calf strap typically lasts 4-6 years with daily wear, developing natural patina. Tannic calf is more resistant to moisture and degradation. Vulcanised rubber lasts 5-8 years. To extend strap life, avoid prolonged water exposure and apply protective treatments periodically. Artisanal straps allow partial lining replacement without compromising the original leather's integrity.