Stainless steel. Ref. 01.0200.415. Exceptional, screw-down case with "rocker" pushers for the chronograph. Blue dial with hour and minute sub-dials, and small second hand, date at 5h, tachymeter scale. El Primero automatic chronograph movement, cal. 3019 PHC. Integrated link bracelet with ladder clasp in stainless steel, wrist size ca. 18.5 cm. D 40 mm. With a new replacement crystal.