Ball Engineer Master II Skindiver II Watch COSC Date Black Dial DM3108A-SCJ-BK 44mm with Rubber Strap BOX SET Imported Movement: ETA Cal. 2824-2 25 jewels Swiss Automatic.Shock resistance: 5,000Gs Anti-magnetic: 4,800A/m. Certified COSC ( Controle Officiel Suisse des Chronometres ) Chronometer.Automatic helium release valve. Bezel: Uni-Directional rotating, ratcheted, 0-60 Elapsed-Time. Black color. Dial: Black color. Luminocity by self-powered tritium filled (3H) micro gas tubes markers. 15 double sized micro gas light (3H) tubes on hour, minute, second hand and dial for night reading capability. Comes in set box with extra Ball Rubber band and changing tool.