Strap for DS-1 Chronograph

The lug width of the Certina DS-1 C0064141105101 is 20mm, measured between the internal attachment points on the case. This dimension is standard for sports chronographs in this category and can be easily verified by removing the factory strap and measuring the linear distance between the inner edges of the two metal lugs.

The ideal strap depends on usage and aesthetic preferences. For daily elegance, a vegetable-tanned alligator in dark brown emphasises the satin case. For sportiness, a grey canvas NATO or a vulcanised rubber strap leverages the water resistance to 300 metres. Italian calf leather with natural grain represents the perfect compromise between elegance and practicality.

The strap is changed by removing the spring bars from the case lugs. Using a dedicated tool, gently press on one side to release the spring, then extract the rod. The new 20mm strap is simply inserted by clicking the spring bars into the corresponding seats. The operation takes just a few minutes and requires no technical expertise.

Absolutely. Straps compatible with 20mm lugs are completely interchangeable with the original model. They are certified and tested to guarantee resistance and durability equal to official Certina accessories. Choosing straps from specialised artisanal manufacturers like Milano Straps ensures construction quality and materials superior to many factory options.

The lifespan of a leather strap depends on intensity of use, season and leather quality. An alligator or Italian calf strap, subject to regular maintenance (cleaning and treatment with special cream), maintains structural integrity for 5-8 years of daily use. NATO straps or rubber have different durabilities: NATO straps resist 10-15 years, whilst vulcanised rubber lasts 7-10 years before showing signs of wear.