Casio C-701 Blue Calculator Watch from 1980 Japan

This is the rare one in Blue

Perfect working order

outstanding condition

a real piece of Casio history 

new batteries and fully serviced 

The Casio C-701 Blue is a highly collectible, vintage digital calculator watch.

It was originally released in 1980 as a foundational model in Casio's early C-series.

Known for its retro aesthetic, the watch features a distinctive royal blue faceplate border and a matching blue rubber-coated keypad face

• Module: Driven by the classic Casio Module 133.
• Power: Runs on two SR1120 batteries with an approximate 2-year lifespan.
• Case & Band: Features a durable, barrel-shaped base-metal or stainless steel case paired with a matching steel link bracelet.
• Keypad: Built with a unique front-facing button grid. Unlike rival calculator watches of the era, the hard, coated buttons are easily pressed with a fingernail, removing the need for a stylus. 

• Calculations: Basic 4-function mathematical calculator (addition, subtraction, multiplication, and division).
• Timekeeping: Supports full digital time, calendar date tracking, stopwatch capabilities, and a secondary dual-time zone.
• Illumination: Features a built-in vintage micro-light to illuminate the LCD panel.
• Note: This early module lacks an integrated alarm function, percentage calculation, or square root capabilities.