Strap for DS 4 Big Size Black

The Certina DS-4 reference C0226101605100 features a lug width of 21 mm. This measurement is taken internally between the case lugs, excluding the spring bar thickness. A strap of this precise width ensures perfect fit without play or friction in the case holes.

The 40 mm Certina DS-4 in brushed steel pairs ideally with high-quality leather straps (alligator, calf, shell cordovan) for an elegant-sporty aesthetic, or with cotton ripstop NATO fabric for rapid chromatic variation. Selection depends on usage: leather for formal occasions, NATO for daily versatility, structured rubber for aquatic environments.

The Certina DS-4 utilises spring bars for strap attachment. Using a dedicated tool or watchmaker's screwdriver, gently compress the spring bar inward toward the case to free one end, then extract the strap from the lug. Insert the new strap (21 mm lug width) into the holes and reinsert the spring bar until the click-lock engages. Professional watchmaker assistance is recommended to avoid case scratching.

Yes, any strap with a 21 mm lug width is compatible with the Certina DS-4 C0226101605100. High-quality artisanal straps allow complete personalisation of the watch's aesthetics. Ensure the strap matches the exact width specification and that spring bars are in optimal condition for secure mounting.

A high-quality leather strap (alligator, calf, shell cordovan) with vegetable tanning typically lasts 3-5 years of daily wear, with variation due to climate, humidity and usage frequency. Leather ages gracefully, developing patina and natural creasing. Minimal maintenance—periodic cleaning and protection from prolonged rain—significantly extends longevity. NATO fabric straps typically last 5-7 years before visible wear appears.