"Ball Engineer Master Diver Chronometer"

This diver’s model, renowned for its inner bezel featuring an effective arrangement of self-luminous micro-gas lights, has been upgraded. Compared to the previous model, the case is over 1 mm thinner;italsoincorporates a new “Swiss C.O.S.C.-certified chronometer , ” andits anti-magnetic performance has significantly improved from “4,800 A/m” to “80,000 A/m.”The crown at the 2 o’clock position, used to operate the inner bezel, features a new locking mechanism (patent pending) that allows for operation even underwater; the inner bezel rotates only when the crown is pressed in and turned. The result is a sports watch that offers an excellent balance of readability, shock resistance, and anti-magnetic performance.

Ref. DM2280A-S1CJ-BK

This watch features a special mechanism that incorporates an inner bezel with a diving scale engraved with minute markings on the inside of the case; the bezel is operated by pressing the crown at the 2 o’clock position—a function designed to work even underwater—and the back is equipped with a micro gas light to ensure exceptional visibility.

It is equipped with a self-winding movement (BALL Caliber RR1101-C) that has earned Swiss Chronometer certification.

The “Diver Chronometer” utilizes Mu-metal—a material with high magnetic permeability—for several components that encase the movement (such as the inner case and base dial). These components form a “magnetic-shielding inner case,” achieving magnetic resistance of 80,000 A/m. It also boasts shock resistance of 5,000 Gs.