Ball Watch · Engineer II

Strap for Engineer II Chronometer Red Label

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter43 mm
ReferenceNM2028C-LCJ-S
FamilyEngineer II
MovementBall Watch caliber RR1102C hours, minutes, seconds | date, day | chronometer
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Engineer II NM2028C-LCJ-S

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Engineer II NM2028C-LCJ-S, seen from the bench

The Engineer II represents one of Ball Watch's technical collections, equipped with the automatic caliber RR1102C with chronometer certification. The movement offers indication of hours, minutes, seconds, date and day of the week. The NM2028C-LCJ-S reference maintains the precision standards characteristic of the American brand.

Frequently asked questions

What is the lug width of the Ball Watch Engineer II NM2028C-LCJ-S?

The Ball Watch Engineer II NM2028C-LCJ-S features a lug width of exactly 20mm. This measurement must be verified with a digital calliper positioned perpendicularly to the two attachment pins on the case. A 20mm strap ensures perfect fit without lateral play, preserving the structural integrity of the case.

Which strap is recommended for the Ball Watch Engineer II NM2028C-LCJ-S?

For a technical tool watch such as the Engineer II NM2028C-LCJ-S, we recommend alligator or crocodile leather for maximum rigidity and tactical adaptability, or vegetable-tanned calfskin for those who appreciate natural ageing. NATO or rubber straps are valid choices for humid environments and maintenance-free use. We advise against shell cordovan, as its natural gloss contrasts with the raw aesthetic of the model.

How do I change the strap on a Ball Watch Engineer II NM2028C-LCJ-S?

Remove the watch from your wrist and position it case-up. Using a dedicated tool (spring bar tool), apply gentle pressure inward on one end of the elastic spring bar securing the strap. The pin will slide out of its seat. Repeat on the opposite side. Insert the pins of your new strap into the seats, ensuring the leather facing is not creased during the operation.

Are aftermarket straps compatible with the Ball Watch Engineer II NM2028C-LCJ-S?

Yes, provided they are certified for the 20mm lug width. Milano Straps leather, NATO and rubber straps have been specifically designed for this geometry, with lug thickness calibrated to avoid damaging the stainless steel case. Always verify compatibility before purchase.

What is the average lifespan of a leather strap for the Ball Watch Engineer II NM2028C-LCJ-S?

A quality artisanal leather strap, subject to ordinary maintenance (gentle cleaning, rapid drying after moisture exposure), lasts approximately 3-5 years under daily-use conditions. Lifespan depends on intensity of use and climatic conditions. Vegetable-tanned materials tend to last longer and develop a fascinating patina over time.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only