F-91WB-8ADF This Casio digital model features a gray bio-based resin band with a matching bio-based resin case and a compact digital display for a clean minimalist look. Built with resin glass, water resistance, and a lightweight slim profile, it is designed for simple dependable everyday wear. Confirmed functions include LED light, a 1/100-second stopwatch, daily alarm, hourly time signal, auto-calendar, and 12/24-hour format, making it a practical choice for casual daily styling.