This lightweight Casio watch combines durability and practicality with a resin case and a flexible synthetic resin strap, making it comfortable for everyday wear. The acrylic glass screen is designed for clarity and resilience. Key features include: Microlight: A built-in side light illuminates the watch face for easy reading in the dark. 12/24-Hour Timekeeping: Switch between 12-hour and 24-hour display formats. Stopwatch: Measures elapsed, split, and final times with 1/100-second accuracy up to 1 hour. Daily Alarm: Audible signal alerts you at set times daily. Automatic Calendar: Displays date, day, and month correctly once set. Battery Life: Approximately 7 years on a single battery. Water Resistance: Resistant to minor splashes according to DIN 8310 / ISO 22810 standards. Dimensions Width: 33.2 mm Height: 38.2 mm Thickness: 8.5 mm F91WS2EF