Seiko M158 5009 Watch Pan Am Gmt World Timer Lemon Led Dial, Light Works

World Time complication: keeps time in 29 times zones around the world and accounts for both time and date of each. Perpetual calendar, pre-programmed to account for varying length months and leap years until 2009. +/- 10 seconds per month accuracy (2 minutes per year). It is said that this watch was popular among pilots of the time, both for its world time and GMT features, as well as the lemon colored LCD, which was easy to read in low light. It should also be noted, that while quartz and digital watches eventually became synonymous with cheap, mass produced, and unserviceable, that was not the case with these early digital watches.

Not only did they sell for a significant premium over the outgoing mechanical equivalents, the components used were robust and high quality for the day. As evidenced by this watch, more than 40 years later, examples of these watches can be found running with the same precision and legibility they offered when new.

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