OMEGA SEAMASTER "MEMOMATIC ALARM" NEW OLD STOCK Omega, "Seamaster Memomatic," Ref. MD 166.072. Made in the 1970s. Fine, cushion-shaped, self-winding, center seconds, water-resistant, yellow gold-plated and stainless steel wristwatch with alarm, date and a gold-plated Omega buckle. Accompanied by the original Omega hang-tag. Dial, case and movement signed. Notes DIM. 40 x 43 mm. THICKNESS 15.5 mm. The Omega Memomat ic was the first alarm wristwatch triggered to the exact minute. Invented by Raoul -He nri Erard , this device carries the patent No. 513447, registered on 7th October 1968 and published the 28th May, 1971. An identical watch is illustrated in: "Omega, A Journey Through Time", Marco Richon, 2007, p. 293.