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Seiko 7B24 - User Manual

Seiko 7B24
82 pages
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*Lengthadjustmentserviceformetallicbandsisavailableatthe
retailerfromwhomthewatchwaspurchasedorSEIKOCUSTOMER
SERVICECENTER.
 Theservicemayalsobeavailableonachargeablebasisatother
retailers,however,someretailersmaynotundertaketheservice.
ThankyouverymuchforchoosingaSEIKOwatch.
ForproperandsafeuseofyourSEIKOwatch,
pleasereadcarefullytheinstructionsinthis
bookletbeforeusing.
Keepthismanualhandyforeasyreference.

Table of Contents

Questions and Answers

  • C
    Christopher MitchellJul 27, 2025
    Why does my Seiko 7B24 Watch second hand move at five-second intervals?
    • J
      Jennifer GarciaJul 27, 2025
      The second hand moving at five-second intervals indicates that the energy depletion forewarning function is activated or the Power Save has been activated to limit energy consumption. To resolve this, sufficiently charge the watch until it starts moving at one-second intervals. If the Power Save was activated, set the time, date, and day. Also, ensure the watch isn't concealed under a sleeve while wearing it, and when not in use, place it in a bright location.
  • R
    Robert AndersonAug 10, 2025
    What to do if Seiko 7B24 Watch fails to receive a radio signal correctly?
    • M
      msilvaAug 11, 2025
      If your Seiko Watch isn't receiving a radio signal correctly, it might be due to being left in an extremely high or low temperature for an extended period, or it could be set to a time zone different from your current location. When the watch returns to a normal temperature, it will display the precise time as before. If the watch still gains or loses the time, conduct manual reception if necessary. Check the time zone setting and select the correct one for your region.

Summary

Safety and Handling

Handling Cautions

Safety regulations for severe injuries.

Cautions for Use

Risks of light injuries or material damages.

Product Features and Operation

Key Watch Features

Overview of solar-drive and radio-controlled functions.

Display and Button Operation

Explains watch face elements and button functions.

Crown Operation

Instructions for normal and screw-lock crowns.

Initial Setup and Time Reception

Checking Charging Status

Interprets second hand movement to indicate battery charge.

Setting Time via Radio Signal

How the watch synchronizes time using radio signals.

Reception Range and Conditions

Details reception range, optimal positioning, and difficult environments.

Displaying Reception Results

Steps to check the success or failure of signal reception.

Time Zone Adjustment

Time Zone Functionality

Explains setting overseas local time and time zones.

Setting Time Zone and Station

Step-by-step guide to select time zone and station.

Solar Charging and Power Management

How to Charge the Watch

Instructions for exposing the dial to light for charging.

Energy Depletion and Power Save

How the watch indicates low energy and conserves power.

Watch Maintenance, Care, and Service

Daily Care and Maintenance

Tips for cleaning and maintaining the watch daily.

Water Resistance and Conditions

Explains water resistance levels and usage conditions.

Magnetic Resistance

How to protect the watch from magnetism.

Band and Clasp Care

Advice on cleaning and adjusting bands and clasps.

Guarantee and Repair Service

Details warranty, service procedures, and parts availability.

Troubleshooting

Manual Radio Signal Reception

Step-by-step guide to manually receive radio signals.

Manual Time and Date Setting

How to manually adjust the watch time and date.

Hand Position Adjustment and Reset

Correcting misaligned hands and resetting the watch IC.

Common Troubleshooting Issues

Addresses hand movement, reception, charging, and alignment problems.

Technical Specifications

Watch Specifications

Technical details of the watch's components and performance.

Seiko 7B24 Specifications

Frequency and Timing IconFrequency and Timing
frequency of crystal oscillator32, 768 Hz
loss/gain (monthly rate)±15 seconds
Operating Environment IconOperating Environment
operational temperature range-10℃ to +60℃
normal temperature range5℃ to 35℃
Power IconPower
power sourceSecondary battery, 1 piece
duration of operationApproximately six months
extended operation with power saveApproximately one year and a half

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