CA-53W-1 - Heritage - Black
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Product "CA-53W-1 - Heritage - Black"
The long-selling calculator watch from Casio, the CA-53, pays homage to the Casio Mini, the world’s first personal 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.
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.
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 SL-800 was designated an Essential Historical Materials for Science and Technology (or Future Technology Heritage) by the National Museum of Nature and Science in Tokyo, as a calculator with an extraordinarily slim, compact form.
Features
Case size (L× W× H)
43.2 × 34.4 × 8.2 mm
Weight
25 g
Case and bezel material
Resin
Band
Bio-based resin band
Water resistance
Water Resistant
Power supply and battery life
Approx. battery life: 5 years on CR2016
Glass
Resin Glass
Compatible band size
125 to 180mm
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
Technical changes and errors reserved.