OMEGA SPEEDMASTER PROFESSIONAL MOONWATCH REF. ST 145.022 OMEGA SPEEDMASTER PROFESSIONAL MOONWATCH REF. ST 145.022 stainless steel case, screw-down case back with Speedmaster logo and antimagnetic cover, pump buttons, crown marked, bezel with black insert and tachymeter scale, black dial signed Omega, white graphics, tritium indexes, seconds counter at nine o'clock, minutes counter at three o'clock, hours counter at six o'clock, manual winding movement cal 861 no. 45250533, steel full-link bracelet, inner length 19 cm, steel box clasp marked Omega, plastic crystal. Diam. 40 mm The Omega Speedmaster Professional is a hand-wound sports wristwatch, produced since 1957 by the Swiss watchmaker Omega. It derives its fame from being the only wristwatch to pass the stringent tests carried out by NASA to provide the astronauts of the Apollo space programme with a reliable chronograph. Thus, the Omega Speedmaster became the first watch to have landed on the Moon. The Omega Speedmaster Professional is a hand-wound wristwatch made in 1957 by Omega. It draws its fame from being the only wristwatch to pass the stringent tests carried out by NASA, to provide astronauts of the Apollo space programme with a reliable chronograph. So the Omega Speedmaster became the first watch to land on the moon.