Sinn watch ezm 13 rubber the ezm 13 was designed as a mechanical timepiece for professional diving as readability plays a crucial role when diving the ezm 13 features an integrated sinn sz02 chronograph movement boasting a 60 minute rather than the standard 30 minute counter at 6 o clock this sz02 movement enables direct and easy reading of the minutes right through from 0 to 60 another special feature is the positioning of the crown and push pieces on the left hand side of the ezm 13 t