I have purchased casio watch model:EF-540D-1AVDF mens chronograph two years back .I am using this stylish watch since then regularly & I want to share my good experience of having it .it dpopped 5/7 times but nothing happen to that .battery replacement not required till now. A person who wants to buy original watch and wants to spend at least 4k can always choose from edifice series EDIFICE LOOKS SO GOOD AND ITS VERY MUCH VALUE FOR MONEY