The Consumer Electronics Hall of Fame: Casio F-91W Wristwatch - IEEE Spectrum

For about $10, this watch can do something that most luxury watches cannot: keep accurate time to within 1 second a day

F91W-1, Steel Black Digital Watch

The Venerable Casio F-91W: The Digital Watch That Took Over the World

Casio F-91W: A watch also worn by an American president

The Consumer Electronics Hall of Fame: Apple Watch - IEEE Spectrum

The Venerable Casio F-91W: The Digital Watch That Took Over the World

New casio watch standard digital watch F-91W-1 from Japan 79767299248

The Venerable Casio F-91W: The Digital Watch That Took Over the World

Stay on schedule during workout routines and other daily activities with the Casio F91W 1 Casual Sport Watch. It displays the current time and also the day and the date. Get reminders of important events and changes in the hour with the daily alarm function and time activities with the chronograph. A light button illuminates the display for reading in low light. It also displays the remaining battery life. This digital sport watch is water-resistant, standing up to sweat and splashes.