Casio 5445 - User Manual

This document is an operation guide for a CASIO watch, model 5445, published in 2015. It provides comprehensive instructions on the watch's functions, usage, and maintenance.

The watch features a solar panel on its face that generates power from light, charging a built-in rechargeable battery. This allows for continuous operation as long as the watch is regularly exposed to light. To ensure optimal charging, users are advised to leave the watch in a well-lit location when not wearing it, ideally exposed to the strongest available light. When worn, it's important to ensure the watch face is not blocked by clothing sleeves, as this can hinder charging and potentially cause the watch to enter a sleep state. A warning is included regarding leaving the watch in bright light for extended periods, as it can become very hot, potentially causing digital displays to black out temporarily. The guide suggests enabling the Power Saving function for long-term storage in bright light to prevent power depletion.

The watch includes a battery power indicator, displayed in the lower digital dial, which shows the current power level (H, M, L, CHG). If the power level drops to "L" (low), a flashing "LOW" message indicates that charging is immediately required. At the lowest level (Level 5), all functions are disabled, and settings revert to factory defaults, necessitating reconfiguration once the battery recharges to Level 2 (M). The watch also features a "Power Recovery Mode," where multiple high-speed operations (illumination, beeper, hand movement) in a short period can cause all battery power indicators to flash, disabling certain functions until power recovers, typically within 15 minutes. Frequent flashing of all indicators suggests low remaining battery power, prompting the user to charge the watch.

Before initial use, users are guided to check the battery power level, configure Home City settings (including daylight saving time), and set the current time. Proper Home City and time settings are crucial for accurate World Time Mode data.

The watch offers five main modes: Timekeeping, World Time, Stopwatch, Countdown Timer, and Alarm. Users can navigate between these modes using specific button operations, with a dedicated instruction to return to Timekeeping Mode by holding down button C for at least four seconds.

In Timekeeping Mode, users can set and view the current time and date, switch between 12-hour and 24-hour formats, and configure Home City and DST settings. The watch features a full automatic calendar that accounts for different month lengths and leap years, requiring date adjustment only after battery replacement or a power drop to Level 5. Analog hands automatically adjust to match the digital display.

The World Time Mode allows viewing the current time in 31 time zones (48 cities) around the globe. Users can scroll through city codes to view different time zones and specify standard or daylight saving time for a selected city. A unique feature allows swapping the Home Time and World Time Cities.

The Stopwatch Mode measures elapsed time, split times, and two finishes, with a capacity of up to 59 minutes, 59.99 seconds. The Countdown Timer Mode can be set for durations from one minute to 100 minutes, with an alarm sounding for 10 seconds when the countdown reaches zero.

The Alarm Mode supports five independent daily alarms and an Hourly Time Signal. When a daily alarm is turned on, a tone sounds for about 10 seconds at the preset time, regardless of the current mode. The watch also provides an "Alarm Countdown" feature, where an indicator flashes and a 60-minute countdown is displayed in the Timekeeping Mode when one hour remains until an alarm time.

Illumination is a key feature, allowing easy reading in the dark. Users can manually turn on illumination by pressing button B, and can select an illumination duration of either 1.5 or three seconds. The watch also has an "Auto Light Switch" that automatically turns on illumination when the wrist is positioned to angle the watch towards the face (more than 40 degrees from parallel to the ground). This feature operates only when ambient light is below a certain level. Warnings are provided for using the auto light switch in situations where sudden illumination could be a distraction or cause injury, such as while riding a bicycle or motorcycle. The auto light switch can be turned on or off, and an indicator confirms its status.

For maintenance, the guide addresses "Hand Home Position Adjustment." Strong magnetism or impact can cause the analog hands to become misaligned. Users can manually adjust the home positions of the hour and minute hands to ensure they align correctly with the digital time. The watch also includes a feature to temporarily move the analog hands away from the digital dials for easier viewing of digital information, with instructions to return them to their normal positions.

General functions applicable across all modes include "Auto Return Features," where the watch automatically returns to Timekeeping Mode or exits setting modes after a period of inactivity. The "Button Operation Tone" can be turned on or off, though alarms and hourly time signals will still operate. "Power Saving" automatically puts the watch into a sleep state (display sleep or function sleep) when left in the dark for a certain period, conserving battery power.

The manual concludes with troubleshooting tips for common issues such as incorrect time settings, misaligned hands, and charging problems, guiding users to relevant sections for solutions.

Casio 5445 Specifications

General

Module	5445
Brand	Casio
Tough Solar	Yes
Type	Digital
Movement	Quartz
Calendar	Full auto-calendar (to year 2099)
Stopwatch	1/100 second stopwatch
Alarm	5 daily alarms
Backlight	LED light