Instruction manual, introducing the functions and usage of the watch.
The Casio 4779/4780 watch manual provides step‑by‑step instructions for configuring the watch’s basic settings, such as time, date, UTC offset, longitude and lunar tide interval. It also describes how to operate each mode, including temperature, tide/moon data, world time, stopwatch, countdown timer and alarm.
Additional sections cover advanced features like automatic illumination, temperature sensor calibration, unit selection, and storage of temperature records. Safety warnings and usage notes are included to ensure accurate measurements and safe operation. This manual is written in Chinese.
| Temperature display range | -10.0°C to 60.0°C (14.0°F to 140.0°F) |
|---|---|
| Temperature resolution | 0.1°C (or 0.2°F) |
| Temperature unit options | °C or °F |
| Temperature record memory capacity | 50 records |
| Stopwatch maximum time | 99 h 59 min 59.99 s |
| Countdown timer range | 1 min to 100 h |
| Automatic illumination timeout | ≈6 hours |
In time‑setting mode, hold the D button for about 3 seconds to toggle the automatic illumination indicator on or off.