Patek Philippe Calatrava Datograph

Movement: mechanical, self-winding.
Functions: hours, minutes, seconds, day of the week, date, month, 24 hours.
Case: polished steel, 36 by 9 mm.
Mineral-crystal glass on top and bottom.
Dial: white, two subdials.
Strap / Bracelet: leather band with steel clasp
No docs and box