ZENITH El Primero 'De Luca' Men's Chronograph, ref. 02.2310.400. Stainless steel. Automatic movement cal. 400, very good working order (+4s/d, 270°). White Panda dial with black counters, date display and Tritium markers, Tritium hands. Original steel bracelet with folding clasp and diver extension. Good condition, visisble signs of wear on case and bracelet. Original box and manual enclosed, manual with purchase date and dealer stamp from Gioielleria Enzo Biancucci. Diameter approx. 40mm without crown, suitable for a wrist size of approx. 20.5cm.