IWC, Portuguieser, ref. IW371221, Ed. Limitée Boutique Genève n°44/50, split-seconds chronograph watch in steel, circa 2017Movement: cal. 76240, mechanical, 27 jewels, n°4391695Case: n°6108279, diam. 41 mmComplications split-seconds chronograph with 1 counter with central seconds, graduation for telemeter and tachometer, subsidiary counter for secondsIWC bracelet: brown crocodile with steel IWC folding claspSignature: dial, movement, case