With a case and dial configuration unlike any other OMEGA; the original 1969 Seamaster Bullhead that inspired this wristwatch is among the rarest, most collectable and most recognizable chronographs ever produced. Seamaster Bullhead Co-Axial Chronograph 43 x 43 mm Seamaster Bullhead Co-Axial Chronograph 43 x 43 mm Seamaster Bullhead Co-Axial Chronograph 43 x 43 mm