The 1977 Casio C-701 Module 133 Calculator Blue Dial Digital M610836 35mm wristwatch is a vintage piece manufactured between 1980-1989. This unisex watch features a classic rectangular shape with a silver case color and a stainless steel bracelet band. The watch includes a calculator function, day/date feature, and a quartz movement. With a snap closure and water resistance not specified, this Casio vintage watch from Japan is a unique and stylish accessory for any watch enthusiast.