F-91WB-7 This Casio model features a white bio-based resin band with a matching resin case and a grey digital display for a clean minimalist look. Built with resin glass and water-resistant construction, it offers a slim lightweight profile suited to dependable everyday wear. Confirmed functions include a 1/100-second stopwatch, daily alarm, hourly time signal, auto-calendar, 12/24-hour format, and LED light, making it a practical choice for users who want classic digital utility in a streamlined daily design.