A limited-edition model that is already sold out by the manufacturer and difficult to obtain. A collaboration model between CASIO CLASSIC and the classic movie "Back to the Future," which celebrates its 40th anniversary in 2025. The base model is the CA-500, a long-selling CALCULATOR model from Casio watches that has been around since the 1980s. The face features the DeLorean motif, which symbolizes the work, vividly expressing the world of the movie. Furthermore, the multi-color around the buttons is inspired by the "time circuit," a device used to set the destination time in the DeLorean, giving you a sense of a journey into the future. The back cover is engraved with the "flux capacitor," a device essential for time travel in the movie. The clasp is adorned with the "Back to the Future" logo, paying attention to every detail. The special video tape-style package also reflects the world of the movie. Basic Specifications Model Number: CA-500WEBF-1ADR (Same overseas model as CA-500WEBF-1AJR) Case Size (H x W x D): 43.2 × 34.4 × 8.2 mm Weight: Approx. 53 g Case/Bezel Material: Resin Band Material: Stainless steel metal band Glass Material: Resin glass Water Resistance: Water Resistant for daily life Battery Life: Approx. 5 years Functions and Features 8-digit calculator function Dual time display Stopwatch (1/100 second, 24-hour counter, split measurement) function Alarm (alarm clock) and hourly time signal function Full auto-calendar (up to 2099) 12/24-hour display switching function, operation sound ON/OFF function Accuracy: ±30 seconds per month