Parameters:Case material: 316L steelCase diameter: 31mm Dial size for case: 24.5mmCase thickness: 12mmCrown: screw-downCase crystal: sapphire glassCase water resistance: deep diving 30ATM (according to the installation)Applicable movement: NH05-NH06 movement Dial size: 24.2mmStrap size: 17mmHand size: 6.7*10.35*11mmNote: The size may have a deviation of about 0.01mm, basically can be used!