Inventor Roger Riehl began development of his SYNCHRONAR wristwatch in 1959 and claims it to be
the very first LED watch. According to Riehl, there were a number of fully working SYNCHRONARs in use prior to PULSAR's prototype demo in May of 1970.
Riehl Time Archives -
Rare material beginning with Roger Riehl's first digital display from 1952; and also including the 1971 newspaper article announcing the launch of his watch with a photograph of one of his fully-functional 1960s prototypes. (Currently under repair/construction)
The Digital Watch Forum - a discussion area covering all types of digital watches. A short-cut to this forum is now available at the easy-to-type URL dwf.nu, where "dwf" stands for
Digital Watch Forum.