Here are introduced the main features and specifications of the 9051 movement.
You can go to pages for further explanation of features from here.

Automatic mechanical watch

This is an automatic winding mechanical watch using a mainspring as power source.
When wearing the watch, your hand’s movement rotates the oscillating weight to wind the mainspring automatically.

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.)
Complies with ISO6425:2018.