The Casio F-91WB-8ADF-S is a lightweight digital watch that modernizes the iconic F-91W with a clean monochromatic design and eco-conscious materials. Featuring a gray bio-based resin case and band, a classic digital display, and Casio's signature everyday functionality, it is ideal for casual wear, school, travel, and daily use. Equipped with a 1/100-second stopwatch, daily alarm, LED backlight, and a long-lasting battery, it delivers dependable performance in an ultra-lightweight design. Official specifications are based on Casio's official product documentation.
Key Features
Water resistant
Bio-based resin case and band
LED backlight
1/100-second stopwatch
Daily alarm
Hourly time signal
Auto-calendar
12/24-hour time format
Quartz digital movement
Lightweight construction
Modern monochromatic gray design
Long battery life
Timekeeping
Displays:
Hour
Minute
Second
PM indicator
Month
Date
Day of the week
Regular digital timekeeping
12/24-hour display formats
Auto-calendar
Stopwatch
1/100-second stopwatch
Measuring capacity: 59'59.99"
Measuring modes:
Elapsed time
Split time
1st & 2nd place times
Alarm
Daily alarm
Hourly time signal
Backlight
Green LED backlight
Design & Materials
Gray bio-based resin case
Gray bio-based resin strap
Resin glass
Digital LCD display
Lightweight construction for comfortable all-day wear
Classic rectangular F-91W styling
Eco-conscious bio-based resin components
Colors
Case: Gray
Band: Gray Bio-based Resin
Display: Digital LCD
Accent Colors: Gray and Black
Case Back: Stainless Steel
Note: The F-91WB-8ADF-S is part of Casio's updated F-91WB collection, featuring bio-based resin components and a modern monochromatic gray finish while retaining the same trusted specifications and everyday functionality that have made the F-91W series a worldwide classic.
Power
Battery Type: CR2016
Approximate Battery Life: 7 Years
Water Resistance
Water Resistant
Suitable for:
Daily hand washing
Light rain
Everyday wear
Not suitable for swimming or diving.
What's Included
Casio F-91WB-8ADF-S Watch
Original Casio Box
Instruction Manual
Warranty Card (provided by the authorized distributor)
