Seiko 7B24 User Manual

*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.

Seiko 7B24 Specifications

Frequency and Timing

frequency of crystal oscillator	32, 768 Hz
loss/gain (monthly rate)	±15 seconds

Operating Environment

operational temperature range	-10℃ to +60℃
normal temperature range	5℃ to 35℃

Power

power source	Secondary battery, 1 piece
duration of operation	Approximately six months
extended operation with power save	Approximately one year and a half

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.