Stainless Steel, Oyster bracelet (SEL) with flip-lock clasp, tachymeter bezel, white dial, automatic Chronometer (Cal. 4030 (base Zenith El Primero 400)), 12-hour chronograph, screw-down crown and pushers, Ref. 16520, A serial, ca. 1999, CPO dated December 2025, 40mm, Mint with CPO set and CPO papers