CA-506-1 This Casio model features a stainless steel band with a black resin case and a grey digital display with an integrated calculator layout for a clean retro-tech look. Built with resin and spherical glass and water-resistant construction, it offers a lightweight durable profile suited to dependable everyday wear. Confirmed functions include an 8-digit calculator, dual time, 1/100-second stopwatch, daily alarm, hourly time signal, full auto-calendar, 12/24-hour format, and button operation tone on or off, making it a practical choice for users who want classic digital utility with distinctive vintage styling.