Strap for DS PH200M 39 Stainless Steel / MOP

The lug width of the Certina DS PH C036.207.18.116.00 is 18 millimetres. This dimension, uncommonly found in contemporary sports watchmaking, preserves the harmonious proportions of the original design. To verify it with precision, use a digital calliper measuring the internal distance between the lug pins: it should measure 18mm ±0.5mm tolerance.

The ideal strap depends upon intended use and aesthetic preference. To complement the mother-of-pearl dial, we recommend natural alligator with fine grain in black, dark brown or taupe tones: this creates harmony without visual competition. Should you prefer pronounced tactile character, vegetable-tanned calf develops a compelling patina over time with medium-coarse grain. For sporting or professional contexts, an 18mm NATO in dark grey or black delivers functionality and perfect proportion.

Remove the watch and position it on a padded surface. Locate the spring bars (the small transverse metal cylinders securing the strap to the lugs). Using a dedicated strap-removal tool—or a fine pointed object—apply gentle pressure to one side of the pin to extract it. Once removed, the old strap releases easily. Align the new strap with the lug holes and reinsert both pins until they click securely into position.

Absolutely. Any strap with an 18mm lug width is compatible, provided it meets equivalent quality standards. Artisanal aftermarket straps—particularly those in alligator, shell cordovan or vegetable-tanned calf—frequently surpass OEM straps in craftsmanship and longevity. The essential requirement is verifying that the lug width is certified as 18mm and that the buckle is robust (preferably a deployante in stainless steel) to withstand the dynamic load of the steel case.

Longevity depends upon tanning method, usage frequency and environmental conditions. A vegetable-tanned alligator strap, worn moderately (5-6 days weekly) without prolonged water contact, typically lasts 4-5 years before replacement becomes necessary. Vegetable-tanned calf generally lasts 3-4 years. If the strap is frequently exposed to moisture or perspiration, expected lifespan reduces by approximately 30%. Proper maintenance—air-drying after water contact, occasional conditioning with specialist oils—significantly extends useful life.