Strap for DS 4 Big Size Titanium

The lug width of the Certina DS-4 C0226104408100 is 21mm. This specific measurement requires straps dimensioned exactly to 21mm, as standard 20mm or 22mm straps would not fit properly into the case lugs. To verify the measurement, place a digital calliper between the two internal attachment points on the case.

For the Certina DS-4 in titanium, 40mm, we recommend alligator straps in grey or black tones to complement the case's colour, or Italian vegetable-tanned calf leather in dark brown for aesthetic contrast. For sports applications, a NATO strap in polyamide maintains the model's austere design philosophy. All straps must be 21mm lug width for perfect compatibility.

Strap replacement requires a spring bar tool (spremitura anse). Position the watch with lugs facing upwards, insert the tool's tip into the lateral opening of the spring bar, apply gentle downward pressure to compress the spring and slide it horizontally out of the lug. Repeat for both sides. Installation of the new strap reverses this procedure, ensuring the spring is correctly seated in its housing.

Yes, the Certina DS-4 C0226104408100 is fully compatible with quality aftermarket straps, provided they are dimensioned to 21mm lug width. Milanostraps.it offers a curated selection of artisanal leather straps in calf, alligator, shell cordovan and rubber, all specifically available in 21mm format. We recommend hand-crafted straps with superior finishing to maximise the value of your watch investment.

Strap longevity depends on frequency of use, climate exposure and maintenance. A quality calf or alligator strap, with moderate daily wear, typically lasts 4–6 years before replacement is necessary. Factors reducing durability include prolonged moisture exposure, frequent perspiration and lack of periodic cleaning. Rotating between multiple straps extends the lifespan of each, allowing leather to dry completely between wearings.