Take a step back to 1976 with a timepiece that pays homage to the world’s first multifunctional digital clock, the Casio CQ-1.
The revolutionary CQ-1 — a clock, alarm, stopwatch and calculator all in one — solicited so much affection. Casio now revives this ’70s design in timepiece form, bringing the original CQ-1 color schemes to a trio of iconic CA-500 models equipped with eight-digit calculator function.
Vintage ’70s flair meets contemporary style for a timepiece as eye-catching as it is nostalgic.
CQ-1
A popular, personal-sized digital clock with innovative functionality. Designed to accommodate people’s daily schedules from the moment they got up in the morning, the CQ-1 featured a unique combination of four functions: time display (clock); time memory (alarm); time measurement (stopwatch); and time calculation (calculator). This memorable product served as the launching pad for the development of subsequent Casio combined-function innovations.
Band
Stainless Steel Band
Adjustable Clasp
Case and bezel material
Resin / Chrome plated
Case size (L× W× H)
43.2 × 34.4 × 8.2 mm
Power supply and battery life
Approx. battery life: 5 years on CR2016
Water resistance
Water resistant
Weight
53 g
Compatible band size
150 to 205 mm
Glass
Resin Glass
Accuracy
Accuracy: ±30 seconds per month
Alarm/hourly time signal
Daily alarm
Hourly time signal
Calendar
Full auto-calendar (to year 2099)
Mute feature
Button operation tone on/off
Other features
8-digit calculator
12/24-hour format
Regular timekeeping:
Hour, minute, second, am/pm, year, month, date, day
Stopwatch
1/100-second stopwatch
Measuring capacity: 23:59'59.99''
Measuring modes: Elapsed time, split time, 1st-2nd place times
World time
Dual time
Retro pop calculator watches: Modelled after the CQ-1 combination clock-calculator
This trio of CA-500 watches pays homage to the CQ-1, a calculator with a clock function Casio introduced in 1976. The unique face design, featuring a full keypad, captures the look of the historic original calculator's colour scheme and design, down to the most intricate details.
The CQ-1 combination clock-calculator
This popular, personal-sized digital clock with innovative functionality debuted in 1976. Designed to accommodate people's daily schedules, starting with getting up in the morning, the CQ-1 featured a unique combination of four functions: time display (a clock); time memory (an alarm); time measurement (a stopwatch); and time calculation (a calculator). This memorable product served as a launching pad for subsequent Casio combined-function development.
Retro pop colours and design
Choose from a trio of retro pop hues selected from the original CQ-1 colour lineup: red, yellow, and white. Design pays homage to the CQ-1 with multicolour accents, the typeface used for mode indicators, and more. A green-hued negative LCD mimics the look of the vacuum-fluorescent displays that calculators had at the time.
Calculated style
The calculator function can handle 8-digit computations. The face combines a full keypad with an LCD for a streamlined gadgety look.