The Casio F-91W has been a mainstay in many wardrobes since its release in the early 1990s and should be your next daily ...

With an 18-karat gold case, it went for a cool $2,100 ... There were many variations in the Casio calculator watches. Some could store data like phone numbers and addresses.

Want a digital watch that’s still delightful and nerdy but sans a calculator? This Casio is also on sale and is only $19. A true watch lover is into all kinds of watches, not just the super ...