ETERNA gents wristwatch Royal Kontiki chronograph GMT, self winding, Switzerland around 2015, reference 7760.00, stainless steel case including bracelet with butterfly buckle, on both sides sapphire glazed, screwed-down case back & winding crown, bezel partial in black ceramic, display of hours, minutes, constant second, date, 2nd timezone (24-hours) & chronograph Flyback, first, self made chronograph-movement calibre 3927A, 35 jewels, diameter approx. 45 mm. length approx. 21,5 cm, condition 2