The Casio F-91W is the most popular digital watch in the world. It was released in 1989 and is still in production today. It is known for its low price and long battery life.
 
- It is known for its ability to withstand extreme conditions which makes it a popular choice for           military and law enforcement personnel.
- It has a simple and minimalist design that appeals to many people.
- It has a number of useful features, such as a stopwatch, alarm clock, and calendar.
- It has become an iconic watch, worn by people from all walks of life.
 
SPECIFICATIONS
 
Basic Information
Case size (L× W× H)
38.2 × 35.2 × 8.5 mm
Weight
21 g
 
Case and bezel material
Resin
Band
Resin Band
Water resistance
Water Resistant
 
Power supply and battery life
Approx. battery life: 7 years on CR2016
 
Exterior
Glass
Resin Glass
Compatible band size
145 to 215 mm
 
Watch Features
Stopwatch
1/100-second stopwatch Measuring capacity: 59'59.99'' Measuring modes: Elapsed time, split time, 1st-2nd place times
Alarm/hourly time signal
Daily alarm
Hourly time signal
Light
LED light
Light color
LED:Green
Calendar
Auto-calendar (set at 28 days for February)
Accuracy
Accuracy: ±30 seconds per month
Other features
12/24-hour format
Regular timekeeping: Hour, minute, second, pm, date, day