This is 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 a DeLorean motif, which is symbolic of the film, vividly expressing the world of the movie. Furthermore, the multi-color design around the buttons is inspired by the "time circuit," the device used to set the destination time in the DeLorean, giving you a sense of traveling to the future. The back cover is engraved with the "flux capacitor," the essential device for time travel in the movie. The clasp is adorned with the "Back to the Future" logo, paying attention to every detail. The special package, designed to look like a video tape, also reflects the world of the movie. I bought it at Bic Camera.