Reference 03.0520.400 El Primero Telemeter | A stainless steel automatic chronograph wristwatch with date, Circa 2015 Dial: black Caliber: cal. 400Z automatic, 31 jewels Case: stainless steel, snap-on case back Closure: stainless steel Zenith double folding clasp Size: 43 mm diameter Signed: case, dial and movement Box: no Papers: no