CASIO PRO TREK — functional watches for outdoor enthusiasts
 

Watertightness

Watertightness

Divided into different classes

The watertightness of the CASIO watches complies with DIN 8310 and ISO 22810. These standards describe the various classes of watertightness and the test procedure used to determine watertightness.
Pictorial representation of the test pressure
These standards apply to the general wristwatch usage. Watches with metre indications for watertightness cannot be used immediately in this water depth, however, as water resistance metre indications are merely a pictorial representation of the test pressure. A wristwatch withstands the impact of water at the static pressure specified on the watch (e.g. 10 bar) and the theoretical immersion in water to the specified depth.
As a result of movements in the water, such as a forceful swimming motion or a stroke on the water, the resulting dynamic pressure can exceed the specified static pressure many times over, thereby impairing the predetermined watertightness of the watch.
Watertightness classification
Inscription base of housing Inscription base of housing Inscription base of housing Inscription base of housing Inscription base of housing
No information
Water Resistent
Water Resist 5 BAR
Water Resist 10 BAR
Water Resist 20 BAR
Watertightness classification (5 bar/50 m*)
The watch is checked for watertightness up to 5 bar. It is therefore best suited to everyday use such as bathing, showering or washing your hands.

Watertightness classification (10 bar/100 m*)
The watch is checked for watertightness up to 10 bar. So it is best suited to frequent swimming or snorkelling, for example.
Watertightness classification (20 bar/200 m*)
The watch is checked for watertightness up to 20 bar. It is therefore best suited to free-diving without equipment, for example.

*The meter indication refers to air pressure rather than depth, which is used in the context of the watertightness test.