Mint 1970s full setBulova chronograph boasted a666 feet water resistance, hence its Deep Sea name. Stainless steel screw back case, measures 38 mm. Original gorgeous matte black dial and matching rotating bezel with luminous dot at 60. Powered by the all-powerful manual winding Valjoux 7733 movement. This example is in overall in great condition, Fitted with the original signed s/s bracelet.