DNA of a Watch (Part III)

Water Resistance

What does it mean when the manufacturer said a watch is water resistance? Table below summarised the usage recommendation from most watch manufacturers when water resistance level of watches.  

Usage recommendation

CASE	Water Resistance up to		Splash Rain	Swimming/ Car Washing	Snorkling/ Diving	Scuba Diving
	Feet	Meter
Unmarked	-	-	NO	NO	NO	NO
Water Resistant	-	-	YES	NO	NO	NO
1 ATM	33 FT	10m	YES	NO	NO	NO
3 ATM	100 FT	30m	YES	YES	NO	NO
5 ATM	165 FT	50m	YES	YES	NO	NO
10 ATM	330 FT	100m	YES	YES	YES	NO
20 ATM	660 FT	200m	YES	YES	YES	YES