Ball Watch Company Trainmaster Endeavour Chronometer NM3288D-LL2CFJ-WH. BALL Watches Innovation and creativity are the cornerstones on the foundation of BALL watches, Accuracy Under Adverse Conditions. Continuing in the tradition of Webster Clay Ball, BALL Watches aspires to manufacture the most accurate mechanical watches on the planet, ruggedised for use by those that live, work and play in truly adverse conditions. With unlimited inspiration, BALL is today setting the standards just as Webster Clay Ball did in the late 1800s and through the early 1900s.