Casio Vintage x Digital ft. Calculator aka Back to the Future Collaboration (Limited Edition) Men Casual Hexagon Water Resistant Watch CA-500WEBF-1A CA500WEBF CA500 CA-500 CA-500WEBF Discover the Casio CA-500WEBF-1A, a limited edition Back to the Future calculator watch. Features a stainless steel bracelet, DeLorean-inspired design with OUTATIME dial and flux capacitor case back, 8-digit calculator, and stopwatch. Housed in special VHS-style packaging. Module / Movement 3558 (quartz) Battery Life / Accuracy Approximately 5 years (+/-30 seconds per month) Crystal Resin glass Light Nil Case / Band Material Resin case with stainless steel band (slide clasp) Water Resistance Water resistant Case Size Thickness: 8.2 mm Diameter: 34.4 mm Length: 43.2 mm Lug width: Integrated Other Specifications Casio Vintage x Digital ft. Calculator aka Back to the Future Collaboration (Limited Edition) Dual time 1/100-second stopwatch (up to 24 hours, elapsed time, split time, 1st-2nd place times) Daily alarm Hourly time signal Full auto-calendar (to year 2099) Button operation tone on/off 8-digit calculator 12/24-hour format Regular timekeeping (digital display)