The Casio F-105W-1ADF is a classic digital timepiece celebrated for its upgraded, highly visible Electro-Luminescent (EL) backlight, unlike its predecessors. Housed in a durable resin case, its core functions include a daily alarm, a 1/100-second stopwatch, and a 7-year battery life, making it a reliable and iconic everyday watch.
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How do I set my Casio F105? I need to change the time back one hour.
Please download the owners manual here: https://www.casio.com/intl/support/watches/manual/?module=3298
The watch is prominently equipped with an "ILLUMINATOR" Electro-luminescent (EL) backlight, which lights up the entire digital display in a clear blue-green hue for superior readability in the dark, a major upgrade from basic LED side-lights.
Featuring a lightweight yet durable resin case and a matching resin band, the watch is built for comfortable, all-day wear and can withstand the rigors of an active, casual lifestyle.
Beyond simple time display in 12/24-hour format, it includes a daily alarm, a 1/100-second stopwatch for timing events, and a functional hourly time signal chime.
Powered by a single CR2016 battery, this highly efficient quartz watch offers an approximate battery life of 7 years, significantly reducing the frequency of maintenance.
Rated as Water Resistant (30 meters/3 ATM), the watch is suitable for everyday use and can confidently handle exposure to light splashes, rain, and brief accidental immersion.
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