The Casio 5081 watch operation guide explains how to set time, alarms, stopwatch, countdown timer, world time, illumination, and hand correction.
This operation guide walks you through all functions of the Casio 5081 digital watch. It covers basic time‑keeping, alarm setup, stopwatch with distance‑based speed calculation, countdown timer, world‑time city selection, illumination settings, and manual hand‑position correction.
Each mode is described with step‑by‑step button sequences, illustrated button letters, and tips for safe use such as auto‑light switch handling and magnet‑impact correction. The reference section provides city‑code tables and technical details for advanced configuration.
| Stopwatch display range | 99 h 59 min 59.999 s |
|---|---|
| Distance value range | 0.1 – 99.9 |
| Illumination duration options | 1.5 s or 3 s |
| Auto‑light switch auto‑off time | ≈ 6 hours |
| Speed‑hand home position | 50 (12 o’clock) |
Press B in any mode; the display will light for the duration set (1.5 s or 3 s).