This manual describes how to use the CASIO watch.
This manual provides step‑by‑step instructions for using the Casio 2819 solar‑powered watch. It covers power management, sleep mode, automatic and manual signal reception, world‑time display, alarm settings, stopwatch functions and how to set the date and time.
Detailed troubleshooting tips are included for signal‑reception failures, battery‑level warnings, and sleep‑mode behavior, helping users keep the watch running accurately in various lighting and environmental conditions. This manual is written in Chinese.
| Power source | Solar cell and rechargeable battery |
|---|---|
| Battery level indicator | 4 levels (1‑4) |
| Number of alarms | 5 (four daily alarms + one hourly chime) |
| Stopwatch range | 23 h 59 m 59.99 s |
| World‑time cities supported | 30 cities (29 time zones) |