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The watch probably wasn’t calibrated,every 90 days you have to calibrate the compass or you might get a wrong reading.
Manual Casio Collection SGW-100-2BER Watch Manual Casio Collection SGW-100-2BER Watch
GMT stands for Greenwich Mean Time (sometimes called UTC, standing for Coordinated Universal Time). It is the time for the longitude 0, that passes through Greenwich near London. In addition to world time, stopwatch, alarm and other basic timekeeping functions, this model also include a direction sensor and temperature sensor. Direction readings and time are indicated by large, east-to-read figures. A large LCD is divided into three segments for a clear, east-to-understand presentation of data. Mineral glass is used to protect against scratching. AM stands for Ante Meridiem and indicates that the time is before midday. PM stands for Post Meridiem and indicates that the time is past midday. Countdown start time setting range: 1 minute to 24 hours (1-hour increments and 1-minute increments) This might be caused by exposure to a magnetic field. It can be solved by a demagnetisation process performed by a professional watchmaker.Home > Miscellaneous > Watches > Casio Watches > Casio Collection SGW-100-2BER Watch Manual Casio Collection SGW-100-2BER Watch
Casio SGW-100 / 3157 / All Models - CasioFan Magazine Casio SGW-100 / 3157 / All Models - CasioFan Magazine
Ja, the device can still be safely used. Firstly, remove the oxidizd battery. Never use bare hands to do this. Then clean the battery compartment with a cotton swab dipped in vinegar or lemon juice. Let it dry and insert new batteries.