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Let’s Talk About Backlights in LCD Watches and Clocks

Recently I've seen a lot of comments and discussion on some of my other videos indicating that there's a lot of interest in watch backlights. When it comes to Casio watches in particular, some folks are concerned that Casio is moving away from Electroluminescence technology in favor of using LEDs for backlights. The Electroluminescent displays tend to have a more consistent, even glow across the entire LCD panels while the LED backlights tend to have one or two "hot spots" at the edges of LCD panels. On the other hand, Electroluminescence displays tend to lose their brightness after years of use and might even fail entirely. They also use more power than LEDs. Some of us have also heard of the term "Indiglo" as a feature of Timex watches. This is Timex's name for the way they use Electroluminescence and/or other technology to create the lights on their watches. In this video I demonstrate the different backlights in several of my watches, going back to some watches from the 1980s all the way up to my newest watch from the year 2021. Almost all of my watches are Casios. I also show some of the backlights on my alarm clocks from Oregon Scientific, Seiko and Ken Tech. Some of the watches featured in this video include the GW-9400, GAW-100, AWGM100, GW-5000, GW-B5600, WV-200, GXW-56, AE1200 and more! Some of the current interest in backlight technology is influenced by the fact that the new "U" versions of some popular G-Shock Squares are using LED instead of Electroluminescence like the older versions. These new models include the GW-5000U, GW-M5610U and GW-S5600U.