BALL
Roadmaster M Model A
All Specifications
Description
BALL Watch Company has always been driven by innovation. From Webb C. Ball’s revolutionary railroad timekeeping standards to the introduction of multiple in-house calibers, the brand remains committed to pushing the boundaries of watchmaking. This year, BALL unveils the Roadmaster M Model A, featuring the fifth BALL Manufacture Caliber RRM7379—an automatic tool watch that seamlessly integrates a mechanical alarm and GMT functionality. Years in the making, the Model A is a testament to BALL’s relentless pursuit of performance, proving that some statements aren’t just seen—they’re heard.
Unlike traditional alarm watches with low-pitched buzzing, the Model A introduces the patented AlarmMATIC® system, engineered for a clearer and longer-lasting chime. A precision-tuned hammer strikes a ring-shaped metal gong, encased in a polymer layer that enhances sound quality while doubling as an Amortiser® anti-shock system. The result is a crisp, school bell-like tone that resonates for up to 18 seconds. True to its automatic nature, the watch powers both timekeeping and alarm functions simply by being worn, with a single crown at 4 o’clock controlling manual winding, alarm setting, and activation.
BALL’s signature micro gas tube technology ensures constant visibility, with a layered dial design featuring hidden openings to enhance sound projection. Meanwhile, the Swiss-made in-house caliber delivers remarkable precision, with an accuracy of -4 to +6 seconds per day. The quick-set GMT hand and scratch-resistant 24-hour ceramic bezel allow effortless tracking of multiple time zones, making it a true traveler’s companion.
Encased in 904L stainless steel, the Model A balances rugged durability with refined craftsmanship. Enhanced with higher chromium, molybdenum, nickel, and copper content, this premium alloy offers superior corrosion resistance while maintaining a polished, high-performance look. Designed for those who demand more from their timepieces, the Roadmaster M Model A is a bold statement in both sound and style—ready for any journey.