Casio Watch User Manual
Modules: 437, 438, 3208 | Models: CA-53, CA-56, CA-506
Water Resistance
The watches are designed with varying degrees of water resistance, conforming to ISO 2281 standards.
- Water Resistant 50M
- Water Resistant 100M
- Water Resistant 200M
- Water Resistant 300M
Specific ratings include:
- 5 BAR (50M): Indicates water resistance up to 5 atmospheres of pressure.
- 10 BAR (100M): Indicates water resistance up to 10 atmospheres of pressure.
- 20 BAR (200M): Indicates water resistance up to 20 atmospheres of pressure.
Note: Water resistance is based on laboratory tests. Avoid operating buttons underwater.
Timekeeping
The watch provides standard timekeeping functions, displaying hours, minutes, seconds, AM/PM indicator, date, and day of the week.
Days of the week are indicated as: SU (Sunday), MO (Monday), TU (Tuesday), WE (Wednesday), TH (Thursday), FR (Friday), SA (Saturday).
Detailed instructions for setting the time and date are typically found in the full manual, often involving pressing specific buttons (e.g., 'B', 'C', 'D') to cycle through modes and adjust values.
Stopwatch
The stopwatch function offers precision timing with a resolution of 1/100th of a second.
- Measuring Capacity: Up to 23 hours, 59 minutes, 59.99 seconds.
- Measurement Modes: Supports elapsed time, split times, and 1st and 2nd place times.
Button operations (e.g., 'A' to start/stop, 'B' to reset) are used to control the stopwatch.
Calculator Functions
These Casio watches feature a built-in calculator capable of performing basic arithmetic operations.
Supported operations include addition, subtraction, multiplication, and division.
Calculation Examples:
| 3 + 4 | = 7 |
| 8 + 4 | = 12 |
| 3 * 4 | = 12 |
| 8 * 4 | = 32 |
| 3 / 4 | = 0.75 |
| 8 / 4 | = 2 |
The calculator typically uses dedicated buttons for number input and operations.
Specifications
Key specifications for the Casio watch modules:
| Feature | Module 437 / 3208 | Module 438 |
|---|---|---|
| Model Numbers | CA-53, CA-56, CA-506 | (Specific model not detailed, but module 438 is covered) |
| Module Numbers | 437, 3208 | 438 |
| Battery Type | 1 x CR2016 | 1 x CR1616 |
| Approx. Battery Life | 5 Years (based on typical usage conditions) | 3 Years (based on typical usage conditions) |
| Timekeeping Accuracy | ±15 seconds per month | ±15 seconds per month |
| Display Format | 12/24-Hour Format | 12/24-Hour Format |
| Year Display Limit | Up to 2079 | Up to 2099 |
Manufacturer Information
Company: CASIO COMPUTER CO., LTD.
Address: 1-6-2, Hon-machi 1-chome, Shibuya-ku, Tokyo 151-8543, Japan
