Satellite radio-controlled watch.

In 2011 Citizen launched the first satellite radio-controlled watch(GPS watch) of the world using an artificial satellite. Seiko, Casio and other watchmakers followed up them.
Satellite radio-controlled watch is different from radio-controlled watch, acquires position and time information from GPS satellite, and automatically corrects time and calendar. It is up-to-date and the most advanced watch.
Currently, even Elgin releases GPS watch.

2011年にシチズンが世界初の人工衛星を使った衛星電波時計(GPS腕時計)を発売した。その後、セイコー、カシオなどが追随した。
衛星電波時計は電波時計と違い、GPS衛星から位置・時刻情報を取得し、時刻とカレンダーを自動で修正する。最新であり、最先端の時計である。
現在では、エルジンでさえ、衛星電波時計を発売している。

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Water resistant.

Even waterproof watches should not be excessively exposed to the threat of water. If you operate the watch crown or button with moisture adhering, water enters inside the watch. If you take a bath while wearing a watch, ingredients such as steam, soap, hot springs will discolor and corrode the metal, and the packing will be deteriorated. If you wash your hands directly from the faucet, watering the watch causes waterproof failure because tap water has high water pressure. The watch is sometimes cloudy due to the temperature difference between the outside air and the inside of the watch. It will not be a problem if it is temporary. 防水時計であっても、過度に水の脅威に晒すことはさけなければならない。水分が付着したまま、リューズやボタンを操作する。(時計内部に水が入る。)時計を着用したまま入浴する。(蒸気・石鹸・温泉の成分などが金属を変色・腐食させたり、パッキンの劣化を早める。)手を洗う際に直接蛇口から水をかける。(水道水は水圧が高いため、防水不良を引き起こす。) 外気と時計内部の温度差によりくもりが生じることがあるが、一時的なものであれば問題ない。

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