Here are introduced the main features and specifications of the F158 movement.
You can go to pages for further explanation of features from here.
Eco-Drive Satellite Wave-GPS
Receives location and time information sent from GPS satellites and adjusts the time and calendar on the watch automatically.
In addition, no periodical battery replacement is needed. This watch is fueled by light.
- Obtaining location information from satellite signals
- Time reception
- About automatic time reception
- Checking the power reserve
- Charging time by environment
- Battery duration after charging it fully
200 m water resistant watch for diving
This watch has 200 m water resistance and can be used for air diving with an air tank (SCUBA diving) .
(You cannot use it for saturation diving using helium gas.)
It conforms with the standard of ISO 6425: 2018.
It prevents wrong operation of the watch during diving; it also halts some functions such as satellite signal reception to keep the current time indicated.
Indicates current power generation amount.
It can be used as a reference for choosing a good charging place.
Indicates the time around the world by choosing one of 38 time zones.
±5-second average monthly accuracy
Keeps high accuracy without time signal reception.
No need for monthly and leap-year date correction until February 28, 2100.
- “Eco-Drive” is one of the Citizen original technologies.