CA-53WF-3B This Casio Data Bank model features a green resin band and matching green resin case with a black digital display for a distinctive retro utility look. Built with resin glass and water-resistant construction, it is designed for light everyday wear with a slim and lightweight profile. Confirmed functions include an 8-digit calculator, dual time, a 1/100-second stopwatch, daily alarm, hourly time signal, full auto-calendar, and 12/24-hour format, making it a practical choice for users who want a classic calculator watch with everyday utility.