This model is based on the CQ-1, a compound calculator with a clock function released by Casio in 1976. The "CQ-1" was a groundbreaking product at the time that included a clock, alarm, stopwatch, and calculation functions in one unit, and it gained wide popularity under the nickname "Denkuro." This is a nostalgic model that uses Casio's iconic series "CA-500", which is equipped with an 8-digit calculation function, in the same color as the "CQ-1" released at the time.
- A compound calculator that revolutionized the functions of the CQ-1 clock and gained popularity under the nickname "Denkuro." It was developed considering the human daily life cycle, which starts from the moment you wake up. It had four functions: (1) time display (clock), (2) time memory (alarm), (3) time measurement (stopwatch), and (4) time calculation (time calculation), and became the origin of Casio's subsequent complex development. Commemorative product.
・Waterproof function for daily life ・8-digit calculation function ・Dual time stopwatch (1/100 second, 24 hour meter, with split)
・Time alarm / time signal ・Full automatic calendar ・12/24 hour display switching ・Operation sound ON/OFF switching function ・Battery life approximately 5 years