3atm water resistant watch

[emil]

HI,I am a sport diver and I wear a swiss made  porsche 3atm water resistant quartz watch.
I was wondering if I can rely on the 3atm factor  and dive to 30 meters
or 99.9 feet with it.
thanks in advance
emil.

[Gary Colclough]

depth ratings are very misleading as they refer to measuremnst in still water , 3atm is 30m which is not suitable at all for diving , the normal term for 30m is "splashproof"

[Gary Colclough]

just found a list of what the ratings mean , 1atm = 10m
Water resistant
Protected against rain and accidental water splashes.

3 bar/30 m
Brief immersion in water, not suitable for swimming.

5 bar/50 m
OK for shallow swimming, car washing.

10 bar/100 m
OK for snorkling.

20 bar/200 m
Diving with regular air tubes.