The Casio F-91WB-8ADF unisex digital watch is a timeless and reliable timepiece designed for everyday use. Its slim, lightweight construction, black dial, and eco-friendly resin strap make it comfortable, functional, and versatile for all daily activities.
Features
- 1/100-second stopwatch allows precise measurement of elapsed time, split time, and 1st–2nd place times
- Daily alarm and hourly time signal ensure punctuality throughout the day
- LED light (green) provides clear visibility in low-light conditions
- Auto-calendar automatically adjusts for months, including February (28 days)
- 12/24-hour format allows flexible display based on personal preference
- Lightweight 21 g design ensures all-day comfort on the wrist
- Durable resin case and strap provide long-lasting wear and reliability
- Accurate timekeeping with ±30 seconds per month consistency
- Long battery life of approximately 7 years (CR2016) reduces maintenance
Specifications
- Model: F-91WB-8ADF
- Case Size (L × W × H): 38.2 × 35.2 × 8.5 mm
- Weight: 21 g
- Case and Bezel Material: Resin
- Band Material: Bio-based resin
- Band Color: Black
- Compatible Band Size: 145 to 200 mm
- Water Resistance: Water resistant
- Glass Type: Resin glass
- Battery Life: Approx. 7 years (CR2016)
- Stopwatch: 1/100-second stopwatch
- Stopwatch Measuring Capacity: 59’59.99”
- Stopwatch Measuring Modes: Elapsed time, split time, 1st–2nd place times
- Alarm: Daily alarm with hourly time signal
- Light: LED light (Green)
- Calendar: Auto-calendar (set at 28 days for February)
- Accuracy: ±30 seconds per month
- Time Format: 12/24-hour format
- Regular Timekeeping: Hour, minute, second, PM, date, day






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