Casio | CA53W-1 Calculator Watch - Black

Reboot your retro style with a timepiece take on the Casio Mini, the trailblazing Casio calculator.

The long-selling calculator watch from Casio, the CA53, pays homage to the Casio Mini, the world’s first personal calculator, featuring the original colors and design of this legendary, groundbreaking calculator.

The unique design of this watch face features a calculator-style combination of LCD and full keypad, incorporating design motifs from the original Casio Mini introduced in 1972. The display employs green text on a negative LCD, and the keypad uses the font from the original, with each key separated by a grid line. The use of red for the mode indicator at the upper right evokes the image of the calculator’s power light. Every detail, down to the white lines along the top and bottom of the watch face, projects retro-modern calculator style.

In addition to a calculator function that adds, subtracts, multiplies, and divides up to eight digits, the watch also comes equipped with dual time, stopwatch, alarm, and more. 

The band is made of bio-based resin, a material expected to help reduce environmental impact.

Casio Mini, the world’s first personal calculator
In 1972, Casio debuted the world’s first personal calculator. With one-chip large-scale integrated circuits (LSI), a six-digit display, and simple componentry, it was a quarter the size of mainstream models at the time, and at 12,800 yen, it cost just a third of competing products. The Casio Mini became a mega hit, selling one million units in the 10 months after its release and a total of six million units over the course of the series. With the Casio Mini, the calculator moved beyond office equipment, becoming part of everyday life as a personal household item. In 2008, the Caso Mini attained an Essential Historical Materials for Science and Technology (or Future Technology Heritage) designation from the National Museum of Nature and Science in Tokyo.

• Vintage look
• Calculator
• Water resistant
• 1/100-second stopwatch
• Dual Time

-Case size (L× W× H)
43.2 × 34.4 × 8.2 mm
-Weight
25 g
-Case and bezel material
Resin
-Band
Resin Band
-Water resistance
Water Resistant
-Power supply and battery life
Approx. battery life: 5 years on CR2016
-Glass
Resin Glass

-World time
Dual time
-Stopwatch
1/100-second stopwatch
Measuring capacity: 23:59'59.99''
Measuring modes: Elapsed time, split time, 1st-2nd place times
-Alarm/hourly time signal
Daily alarm
Hourly time signal
-Calendar
Full auto-calendar (to year 2099)
-Mute feature
Button operation tone on/off
-Accuracy
Accuracy: ±15 seconds per month
-Other features
8-digit calculator
12/24-hour format
Regular timekeeping:
Hour, minute, second, am/pm, year, month, date, day