Watch Terminology Dictionary

A clock that receives standard radio waves to correct errors. It receives radio waves from a cesium clock placed at a radio wave transmitting station and adjusts the time. When there is no reception, the monthly deviation is about ±15 seconds, but when reception is possible, there is almost no error. It can also automatically correct the time difference by receiving from transmitting stations around the world. Junghans was the first to commercially market it in 1986. The main radio wave base stations around the world are in Japan (2 stations), the United States (2 stations), Germany, the United Kingdom, China, etc.