How to adjust the time on h240m

H240 is a Citizen Optical Kinetic Multi-Bureau Radio Watch. It is auto-calibrated, no need to manually adjust the time.

Light kinetic energy electric wave watch, as long as there is light there is energy, as long as it can receive the electric wave will never have error. Citizen Electric Wave watches are all powered by the Optokinetic technology, which utilizes any visible light source as an energy driver. Constant power, managed automatically, provides the wearer with all-around convenience. Citizen was the first company in Japan to dedicate itself to the development of the Electro-Wave watch, and has always been a leader in this field.

The principle of operation of the Eco-Drive Electric Boom Watch is that it is based on an atomic clock, and automatically adjusts the time and date by receiving the standard time radio signals from a radio tower through an antenna built into the watch. Since the timepiece is made of rare cesium atoms (Cesium), it can accurately maintain the standard time with an amazing performance of 1 second error in 100,000 years.

Expanded Information:

Principle:

Radio watch through the watch built-in radio wave Through the watch built-in receiver and antenna, receive the "standard time" radio waves from the transmission tower, get the moment calendar and other data, automatically correct the watch time and date. The standard time radio wave adopts the theory of high-precision cesium atomic watch, with an error of one second in 100,000 years.

The National Timing Center civil standard time radio wave tower is located in Henan Shangqiu, Henan Shangqiu radio wave tower signal range covers most of China except Xinjiang, Tibet. In North Korea, South Korea and Japan's western region can also receive the tower's transmission of radio signals. There are also airwave towers in the United States, Germany, Japan and other countries.

Functions:

The radio wave watch with the function of receiving global multi-location radio waves can receive radio wave signals transmitted by radio wave towers in different countries and realize automatic time difference conversion. Whether the wearer is in China, the United States, Europe _ Japan, as long as the time zone representative of the city name, the watch can automatically receive the local standard time of the airwave signal, and calibrate the time, so that the wearer can rest assured that comfortable.

Baidu Encyclopedia - Eco-Drive Radio Watch