Calculator watch

Calculator watches were first introduced in the 1970s and continue to be produced, despite falling from their peak popularity during the 1980s.

Most calculator watches perform only basic arithmetic operations (addition, subtraction, multiplication, and division).

The Time watches carried a high price tag (US$4,000) because they were made of solid gold and operated by a stylus pen owing to the small size of their buttons.

Mass-produced calculator watches appeared in the early 1980s, with the most being produced in the middle of the decade.

Their popularity began to fade in the mid-1990s with the introduction of cheaper mobile phones and PDAs, which could perform the same functions.