BALL
Roadmaster M Challenger II 40
Reference
DM3130B-S12C-BER
Case
Stainless Steel
Dial
Blue
Movement
Automatic
Water Resistance
30 ATM / 300 meters
Functions
Hours, Minutes, Date, Sweeping Seconds
All Specifications
Reference
DM3130B-S12C-BER
Case Material
Stainless Steel
Case Size
40mm
Case Back
Open
Dial Color
Blue
Luminescence
Yes
Strap Material
Stainless Steel
Buckle Type
Folding Clasp
Movement
Automatic
Caliber
RRM7309-C
Water Resistance
30 ATM / 300 meters
Functions
Hours, Minutes, Date, Sweeping Seconds
Description
BALL
, founded in 1891 by Webster Clay Ball in Cleveland, Ohio, has its roots in precision and reliability. After a catastrophic train collision in Kipton, Ohio, due to a faulty timepiece, Ball was appointed Chief Time Inspector. He established strict timekeeping standards for railroad chronometers, ensuring synchronized and accurate watches that revolutionized railroad safety.
Known for their rugged, functional designs,
BALL
became a symbol of reliability under adverse conditions. The brand pioneered innovations like anti-magnetic cases, shock resistance, and luminescent dials. Today,
BALL
continues its legacy of durability and precision, making modern timepieces with a nod to its railroad heritage.