Strap for Engineer II Chronometer Red Label

The lug width of the Ball Watch Engineer II NM2028C-SCJ-BK is 20mm. This dimension represents the distance between the two vertical lugs on the case and must be measured with precision using a calliper or millimetre ruler. Accurate measurement is essential to ensure proper mechanical compatibility between the watch and any aftermarket strap.

The ideal strap depends on your usage context and aesthetic preferences. For formal professional settings, we recommend vegetable-tanned leather (chocolate brown, black, or burgundy) fitted with a stainless steel deployante clasp. For operational or change-on-the-fly scenarios, a cotton-nylon NATO offers versatility and rapid interchangeability. For humid or marine environments, FKM (Viton) rubber in black provides maximum durability. The Engineer II, by virtue of its technical nature, harmonises beautifully with all of these materials without stylistic compromise.

To change the strap, you must remove the spring bars that connect the lugs to the case. Use a spring bar tool with extreme care: insert the bifurcated tip beneath the spring bar and lift with controlled pressure until it emerges. Repeat on both sides. The new strap should be inserted respecting proper orientation, and the spring bar pressed until you perceive an audible click. We do not recommend DIY if you lack experience, as a mistake may scratch the case or damage the spring bars.

Any strap with a 20mm lug width is mechanically compatible with the NM2028C-SCJ-BK. This includes leather straps (alligator, shell cordovan, calf), NATO, vulcanised rubber, canvas, and suede. The essential requirement is to verify that the strap has been constructed for that specific lug width. Milano Straps offers a curated collection of 20mm straps in various finishes and materials, selected for aesthetic harmony and durability.

The lifespan of a leather strap depends on material quality, tanning method (vegetable vs. chemical), daily usage patterns, and environmental conditions (humidity, temperature, UV exposure). A high-quality vegetable-tanned leather strap, if properly maintained (dried after water contact, protected from violent flexing), can last 3–5 years of moderate daily use. A rubber or NATO strap offers superior durability (5–7+ years). Rotating between multiple straps significantly extends the life of each, allowing the material to rest between usage cycles.