Glycine watch airman airfighter 3921999lb99b the glycine airman watch collection was first conceived during the 1950s a time when there was a growing class of pilots jet setters and travellers who all dreamed of having two time zones on their wrist glycine combined their talents with a generation of professional pilots to design a watch that boasted not only the regular local time but also a world time function and now glycine watches are one of the most well known luxury watch brands