Citizen H144 User Manual

1
To determine the movement number
Your watch features a case number engraved on the
case back (refer to figure to the right).
The first four characters of the case number
represent the movement caliber number of the
watch.
In the example on the right, “1234” is the movement
number.
Thank you for your purchase of this Citizen watch.
Before using the watch, read this instruction manual carefully to ensure
correct use.
After reading, be sure to store this manual in a safe place should it be
needed for future reference.
✳
The case has different features depending on the model.
Details of the case features are not contained in this manual, see
“ http://www.citizenwatch.jp/support/default.htm ”.
Engraving position example
The engraving position may differ
depending on watch model.

Citizen H144 Specifications

General

Brand	Citizen
Model	H144
Category	Watch
Language	English

Summary

Determine Movement Number

Engraving Position Example

Illustration showing where the case number is engraved on the watch back for reference.

Safety Precautions

Safety Advisory Categories

Explanation of DANGER, WARNING, and CAUTION levels used in the manual for safety advisories.

Instructional Symbols Meaning

Definition of warning symbols used for important instructions and precautions in the manual.

Before Using the Watch

Component Identification

Screw Down Crown and Push Button Operation

Checking Power Reserve

Checking Time Signal Reception

Setting the City for Time Display

Notes on Time Signal Reception

Methods of Receiving Time Signal

Details on automatic, on-demand, and recovery automatic time signal reception methods.

Time Signal Stations Information

Approximate Receivable Area for Signal Stations

Areas Prone to Poor Signal Reception

On-Demand Signal Reception Activation

Daylight Saving Time (DST) Season

DST Handling by Movement Caliber

How DST is managed automatically for H144 and H145 movement calibers based on signal.

Checking Daylight Saving Time Setting

Manually Changing Daylight Saving Time

Living in Areas Without Daylight Saving Time

Recharging Your Watch

Insufficient Charge Warning Function

Charging Time by Environment

Power Save Feature Operation

Canceling the Power Save Feature

Procedure to disengage the power save feature and resume normal watch operation.

Manual Time and Calendar Adjustment

Month and Year Indications Explained

Checking and Correcting Reference Position

Understanding the Reference (0) Position

Definition of the base position for all hands and date indicator for correct timekeeping.

Correcting Reference Position Steps

Troubleshooting Guide: Signal Reception

Problems with Time Signal Reception

Remedies for unsuccessful time signal reception in receivable areas and interference.

Reception Unsuccessful in Area

Steps to take when signal reception fails despite being in a receivable area.

Troubleshooting: Hands and Operation Issues

Incorrect Time/Date After Reception

Steps to resolve incorrect time or date indications after successful signal reception.

Hands Not Working Properly

Diagnosing and fixing issues with the watch hands' movement or stopping.

Troubleshooting: Time/Date and DST

Time/Date Incorrect or Missing DST

Solutions for incorrect time, date, or missing Daylight Saving Time indication.

Troubleshooting: Time, Date, Functionality

Time Wrong Despite Correct Settings

Addressing time errors when city setting and signal reception are correct.

Watch Not Functioning After Charging

Steps to take if the watch malfunctions even after full charging and setup.

Resetting the Watch

Resetting Procedure and Caution

Instructions for resetting the watch and important cautions before and after the process.

Post-Reset Watch Setup Procedures

Selecting City and Adjusting Time/Calendar

Steps to reconfigure the watch after a reset, including city selection and time adjustment.

Solar-Powered Watch Handling Precautions

Recharging Precautions

Rechargeable Cell Handling and Replacement

Use Only Specified Rechargeable Cell

Water Resistance Guide

Understanding Water Resistance Levels

Precautions and Usage Limitations

General Safety and Injury Prevention

Careful handling advice to avoid injury during use or when wearing the watch.

General Precautions for Watch Use

Watch Care: Straps, Temperature, Static, Magnetism

Watch Care: Shock, Chemicals, and Cleaning

Keeping Your Watch Clean

Instructions for cleaning the watch case, band, and buttons to prevent sticking and damage.

Maintenance and Periodical Inspections

Daily Maintenance Tasks

Routine cleaning and care procedures for the watch and its band for daily upkeep.

Periodical Inspection Needs

Importance of regular inspections and parts replacement for safety and long-term water resistance.

Information on Time Signal and Luminous Paint

About the Time Signal

Details on time signal broadcast, availability, and effects on human body or equipment.

About Luminous Paint

Information on luminous treatment for dial and hands, and its properties.

Watch Specifications